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Created January 13, 2026 21:17
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claude-session.md

the /rop/quiz/new endpoint is erroring since our http status codes change on master branch. Can you poke around newrelic to see if you can find the cause? Started just after 11:45am local

⏺ I'll use the NewRelic skill to investigate this error.

⏺ Skill(...) ⎿ Launching skill: newrelic

⏺ Let me query NewRelic to investigate the /rop/quiz/new endpoint errors. I'll start by looking for error spans around that time.

⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM Span WHERE name LIKE '%quiz...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE (name LIKE '%quiz%' OR ...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Log WHERE message LIKE '%quiz%' AN...) ⎿ Exit code 1 level=fatal msg="json: cannot unmarshal array into Go struct field NRDBResultContainer.data.Actor.Account.NRQL.otherResult of type nrdb.NRDBResult"

⎿ []

⎿ []

⏺ Let me try a different approach - searching for the specific endpoint and looking at MOA API errors.

⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE url.path LIKE '%/rop/%'...) ⏺ Bash(newrelic nrql query --query "SELECT uniques(service.name) FROM Span WHERE url...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Log WHERE message LIKE '%rop%' AND...) ⎿ []

⎿ [ { "uniques.service.name": [ "frontend-web-app" ] } ]

⎿ []

⏺ Let me look at the frontend-web-app and MOA API for errors around 11:45am.

⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE service.name = 'fronten...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE service.name LIKE '%moa...) ⏺ Bash(newrelic nrql query --query "SELECT uniques(service.name) FROM Span WHERE ser...) ⎿ []

⎿ []

⎿ [ { "uniques.service.name": [ "magento-temporal-processors" ] } ]

⏺ Let me check Transaction events and look for different data sources.

⏺ Bash(newrelic nrql query --query "SELECT * FROM Transaction WHERE request.uri LIKE...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM TransactionError WHERE request.uri...) ⏺ Bash(newrelic nrql query --query "SELECT uniques(appName) FROM Transaction WHERE r...) ⎿ Output too large (34.9KB). Full output saved to: /Users/justinabrahms/.claude/projects/-Users-justinabrahms-src-github-com-thrivemarket-magento/c9a7c5c5-eb4c-475a-b21f-c71d089fa118/tool-results/toolu_01L6E6m7cfD1shd2TpVzMa6c.txt

Preview (first 2KB):
[
  {
    "appId": 285320705,
    "appName": "PROD-FE-WEB",
    "clusterName": "prod-eks",
    "containerName": "frontend-web-app",
    "deploymentName": "frontend-web-app",
    "duration": 0.019106972,
    "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058Mjg1MzIwNzA1",
    "error": false,
    "guid": "dc89a8f761a2a88d",
    "host": "frontend-web-app-b5464889c-nkd5f",
    "http.statusCode": "200",
    "http.statusText": "OK",
    "name": "WebTransaction/WebFrameworkUri/Nextjs/GET//quiz/[quizKey]/[stepKey]",
    "namespaceName": "frontend-web-app-concourse",
[..snip.. 28 more lines]

⎿ [ { "aggregateFacet": "WebTransaction/WebFrameworkUri/Nextjs/GET//_error::Error", "appId": 283717201, "appName": "dev-FE-WEB", "duration": 51.789035735, "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjgzNzE3MjAx", "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjgzNzE3MjAx", "error.class": "Error", "error.expected": false, "error.message": "HttpError 500", "guid": "26a7076c1df7d128", "host": "DESKTOP-K7K1B1T", "http.statusCode": "500", "http.statusText": "Internal Server Error", "port": 5000, "priority": 1.213407, "realAgentId": 562024125, "request.headers.accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.7", "request.headers.acceptEncoding": "gzip, deflate, br, zstd", [..snip.. 140 more lines]

⎿ [ { "uniques.appName": [ "STG-CMSAPI", "STG-MOA-API", "Prd: Admin Panel", "PROD-FE-WEB", "PRD-brand-insights", "PROD-CMSAPI", "dqa-FE-WEB", "stg-FE-WEB", "PROD-MOA-API" ] } ]

⏺ Found the app names. Let me look at PROD-MOA-API for the /rop/quiz/new endpoint errors around 11:45am.

⏺ Bash(newrelic nrql query --query "SELECT * FROM TransactionError WHERE appName = '...) ⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM TransactionError WHERE appN...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Transaction WHERE appName = 'PROD-...) ⎿ []

⎿ [ { "count": 337, "facet": "/ads/shoppable", "request.uri": "/ads/shoppable" }, { "count": 155, "facet": "/ads/display_banner", "request.uri": "/ads/display_banner" }, { "count": 100, "facet": "/account", "request.uri": "/account" }, { "count": 19, "facet": "/collect", "request.uri": "/collect" [..snip.. 232 more lines]

⎿ []

⏺ No errors directly showing for /rop/quiz/new. Let me look at transactions on that endpoint and check status codes.

⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM Transaction WHERE appName =...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Transaction WHERE appName = 'PROD-...) ⎿ [ { "count": 3660, "facet": [ "/rop/quiz/new", "200" ] }, { "count": 2781, "facet": [ "/rop/quiz", "200" ] }, { "count": 2681, "facet": [ "/rop/quiz/answer", "200" [..snip.. 52 more lines]

⎿ Output too large (44.4KB). Full output saved to: /Users/justinabrahms/.claude/projects/-Users-justinabrahms-src-github-com-thrivemarket-magento/c9a7c5c5-eb4c-475a-b21f-c71d089fa118/tool-results/toolu_01CBctZJj1uEzR5ZatV5v4xZ.txt

Preview (first 2KB):
[
  {
    "appId": 261990055,
    "appName": "PROD-MOA-API",
    "databaseCallCount": 99,
    "databaseDuration": 1.69914,
    "duration": 2.09335,
    "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "error": false,
    "error_message": "Failed to start a new quiz",
    "externalCallCount": 1,
    "externalDuration": 0.09238,
    "guid": "c916681cd3cce7a3",
    "host": "tm-prd-api-useast1-5a72",
    "http.statusCode": 200,
[..snip.. 45 more lines]

⏺ Found it! The transaction data shows the issue clearly:

"http.statusCode": 200,
"error_message": "Failed to start a new quiz",
"response_status": 400,
"response_success": false

The endpoint returns HTTP 200 but the body contains response_success: false and response_status: 400. Let me dig deeper to find what's causing the failure and when it started.

⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM Transaction WHERE appName =...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Transaction WHERE appName = 'PROD-...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Log WHERE message LIKE '%quiz%' AN...) ⎿ [ { "beginTimeSeconds": 1768294811, "count": 0, "endTimeSeconds": 1768295711 }, { "beginTimeSeconds": 1768295711, "count": 0, "endTimeSeconds": 1768296611 }, { "beginTimeSeconds": 1768296611, "count": 0, "endTimeSeconds": 1768297511 }, { "beginTimeSeconds": 1768297511, "count": 0, "endTimeSeconds": 1768298411 [..snip.. 222 more lines]

⎿ [ { "appId": 261990055, "appName": "PROD-MOA-API", "databaseCallCount": 85, "databaseDuration": 0.08406, "duration": 0.20467, "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "error": false, "error_message": "Failed to start a new quiz", "externalCallCount": 1, "externalDuration": 0.0465, "guid": "8572835aa2e3dd61", "host": "tm-prd-api-useast1-bc81", "http.statusCode": 200, "httpResponseCode": "200", "name": "WebTransaction/Custom/RopQuizController@createNewQuiz", "parent.transportType": "HTTP", "parentSpanId": "672764a766636078", "priority": 0.52566, [..snip.. 202 more lines]

⎿ []

⏺ Excellent! I can see the timeline clearly now. The failures spiked dramatically:

  • Before ~11:30am: 0-4 failures per 15-min window
  • ~11:30-11:45am: jumped to 62, then 174, 158, 112, 143 failures

Let me convert that timestamp and look for what might be calling external services that's failing.

⏺ Bash(date -r 1768333511) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⏺ Grep(RopQuizController) ⎿ Tue Jan 13 11:45:11 PST 2026

⎿ Output too large (32.5KB). Full output saved to: /Users/justinabrahms/.claude/projects/-Users-justinabrahms-src-github-com-thrivemarket-magento/c9a7c5c5-eb4c-475a-b21f-c71d089fa118/tool-results/toolu_01QJHxwX1tqXEhb1XN1k66Vp.txt

Preview (first 2KB):
[
  {
    "appId": 261990055,
    "appName": "PROD-MOA-API",
    "category": "generic",
    "duration": 0.00002,
    "duration.ms": 0.02,
    "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "entity.name": "PROD-MOA-API",
    "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "error": true,
    "error.class": "LogicException",
    "error.group.guid": "MjY0OTkzMnxFUlR8RVJSX0dST1VQfDAyZjRkYzE1LTgxMDQtM2UzZC1hYTAzLTYyNThlMDdhZmUyYw",
    "error.group.message": "Uncaught exception 'LogicException' with message 'No ROP Quiz eligible products found in ML response' in /media/www/thrivemarket/Web/releases/<HEX>/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/QuizStateService.php:179",
    "error.group.name": "LogicException",
    "error.message": "Uncaught exception 'LogicException' with message 'No ROP Quiz eligible products found in ML response' in /media/www/thrivemarket/Web/releases/20260113194658/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/QuizStateService.php:179",
[..snip.. 29 more lines]

⎿ No files found

⏺ Found the root cause! The error is:

LogicException: No ROP Quiz eligible products found in ML response

This is in QuizStateService.php:179. The failures started at exactly 11:45:11 PST - matching your reported time precisely.

Let me check if there was a deployment and look at the code to understand the issue.

⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM Span WHERE appName = 'PROD-...) ⏺ Glob(**/QuizStateService.php) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Deployment WHERE appName = 'PROD-M...) ⎿ [ { "beginTimeSeconds": 1768294869, "count": 0, "endTimeSeconds": 1768295769 }, { "beginTimeSeconds": 1768295769, "count": 0, "endTimeSeconds": 1768296669 }, { "beginTimeSeconds": 1768296669, "count": 0, "endTimeSeconds": 1768297569 }, { "beginTimeSeconds": 1768297569, "count": 0, "endTimeSeconds": 1768298469 [..snip.. 222 more lines]

⎿ /Users/justinabrahms/src/github.com/thrivemarket/magento/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/QuizStateService.php

⎿ []

⏺ Read(/Users/justinabrahms/src/github.com/thrivemarket/magento/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/QuizStateService.php) ⏺ Bash(git log --oneline --since="2026-01-13 00:00:00" --until="2026-01-13 12:00:00"...) ⎿ 160→ $ropQuizType 161→ ); 162→ $resourceModel->commit(); 163→ } catch (\Throwable $t) { 164→ $resourceModel->rollback(); 165→ throw $t; 166→ } 167→ } 168→ 169→ /** 170→ * Validate the prefill data for the ROP Quiz. 171→ * 172→ * @param Transport $prefillItemsTransport 173→ * 174→ * @return bool 175→ */ 176→ protected function validateRopQuizData(PrefillItemsTransport $prefillItemsTransport): bool 177→ { 178→ if ($prefillItemsTransport->getRopQuizEligibleProductIds() == []) { 179→ throw new \LogicException('No ROP Quiz eligible products found in ML response'); [..snip.. 35 more lines]

⎿

⏺ Bash(git log --oneline -20) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⎿ 634c4d9e59 Enable background analysis for canary rollouts with NewRelic fd2473ffd7 Enable Kargo prod stage with canary rollout and prod env config 5cf10bbf16 Add env vars and secrets to CMS-API rollout 2017cc1e73 Fix MOA Redis config to use REDIS_CACHE_HOST env var 8ee51e9274 Fix DB hosts: write to primary, read from RO replica 0b14679298 Map DB secret keys to expected env var names d0a10318f9 Add magento/var volume mount using shared /tmp volume 0976d656ab Configure separate Redis hosts for session and cache 8ff2e0890a Add namespace-scoped SecretStore for ExternalSecrets 1d4f70e647 Update ExternalSecrets to v1 API version 32d75c2718 Fix ClusterSecretStore name in ExternalSecrets 3edb384012 Add ExternalSecrets to pull credentials from AWS Secrets Manager cf509b9ddc Write Laravel logs to /tmp by default 4b9e12f256 Set LOG_CHANNEL=errorlog for k8s-native logging ba1ddb31b2 Fix storage volume mount path for Laravel logs 3ccbd22b8f Add initContainer to create Laravel storage directory structure df08c29d1f Fix fastcgi_params order so REQUEST_URI override takes effect 616bc77f76 Strip /magento prefix in k8s nginx config for path-based routing 49f6a0266b Fix ALB health check for magento deployment in Trellis 5986ed3139 Merge branch 'master'

⎿ []

⎿ [ { "appId": 261990055, "appName": "PROD-MOA-API", "category": "generic", "duration": 0.00215, "duration.ms": 2.15, "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "entity.name": "PROD-MOA-API", "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "guid": "b7737da07ae7666e", "host": "tm-prd-api-useast1-c1e0", "id": "b7737da07ae7666e", "name": "Custom/Thrive_CartPrefill_Model_Sms_Filter_Preferences::getDietaryAnswers", "parent.id": "e8855eabb7e44795", "parentId": "e8855eabb7e44795", "priority": 1.98192, "process.id": "59071b9e5d59da3d", "realAgentId": 560573195, "sampled": true, [..snip.. 268 more lines]

⏺ Let me check external HTTP calls in the failing transactions and look at the ML service response.

⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⏺ Bash(newrelic nrql query --query "SELECT count(*) FROM Transaction WHERE appName =...) ⎿ Output too large (32.3KB). Full output saved to: /Users/justinabrahms/.claude/projects/-Users-justinabrahms-src-github-com-thrivemarket-magento/c9a7c5c5-eb4c-475a-b21f-c71d089fa118/tool-results/toolu_01W9twGwNH3GuwvRy1FigSAY.txt

Preview (first 2KB):
[
  {
    "appId": 261990055,
    "appName": "PROD-MOA-API",
    "category": "http",
    "component": "curl",
    "duration": 0.07369,
    "duration.ms": 73.69,
    "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "entity.name": "PROD-MOA-API",
    "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1",
    "guid": "2a5e20b9e97db91c",
    "host": "tm-prd-api-useast1-8099",
    "http.method": "POST",
    "http.statusCode": 200,
    "http.url": "https://api.sailthru.com/email",
[..snip.. 47 more lines]

⎿ Exit code 1 level=fatal msg="json: cannot unmarshal array into Go struct field NRDBResultContainer.data.Actor.Account.NRQL.otherResult of type nrdb.NRDBResult"

⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⏺ Grep(getRopQuizEligibleProductIds) ⎿ [ { "appId": 261990055, "appName": "PROD-MOA-API", "category": "http", "component": "Guzzle 6", "duration": 0.02085, "duration.ms": 20.85, "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "entity.name": "PROD-MOA-API", "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "guid": "3675ba42b307574d", "host": "tm-prd-api-useast1-e8fa", "http.method": "POST", "http.statusCode": 200, "http.url": "https://catalog.prd.thrivemarketinternal.com/v1/mget/products", "id": "3675ba42b307574d", "name": "External/catalog.prd.thrivemarketinternal.com/all", "parent.id": "196bcdb94b2d4855", "parentId": "196bcdb94b2d4855", [..snip.. 642 more lines]

⎿ Found 3 files moa/api/app/tests/Model/Thrive/RopQuiz/TestQuizStateService.php moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/Transport.php moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/QuizStateService.php

⏺ Read(/Users/justinabrahms/src/github.com/thrivemarket/magento/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/Transport.php) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⎿ 1→<?php 2→ 3→declare(strict_types = 1); 4→ 5→namespace Moa\API\Model\Thrive\RopQuiz; 6→ 7→/** 8→ * ROP Quiz Prefill Data Transport object 9→ * 10→ * @copyright Copyright (c) 2023 Thrive Market Inc. (http://www.thrivemarket.com) 11→ * @license https://thrivemarket.atlassian.net/wiki/display/magento/BSD+License BSD License 12→ / 13→ 14→/* 15→ * @method Transport setRequestParams(array $requestParams) 16→ * @method array getRequestParams() 17→ * @method Transport setResponse(array $response) 18→ * @method array getResponse() 19→ * @method Transport setAlgoProductIds(array $aloProductIds) 20→ * @method array getAlgoProductIds() [..snip.. 155 more lines]

⎿ [ { "appId": 261990055, "appName": "PROD-MOA-API", "category": "http", "component": "Guzzle 6", "duration": 0.02097, "duration.ms": 20.97, "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "entity.name": "PROD-MOA-API", "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "guid": "1088a1c4cd18e2b9", "host": "tm-prd-api-useast1-d03a", "http.method": "GET", "http.statusCode": 200, "http.url": "https://api2.thrivemarketinternal.com/customer-score-service/customer/bia", "id": "1088a1c4cd18e2b9", "name": "External/api2.thrivemarketinternal.com/all", "parent.id": "2b7b314d77ba42d8", "parentId": "2b7b314d77ba42d8", [..snip.. 642 more lines]

⏺ Let me look for where the ML service is called for the ROP Quiz prefill data.

⏺ Grep(processPrefillResponse) ⏺ Bash(newrelic nrql query --query "SELECT * FROM Span WHERE appName = 'PROD-MOA-API...) ⎿ Found 11 files moa/api/app/tests/Model/Thrive/RopQuiz/TestFacade.php moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/Facade.php moa/api/app/tests/.phpunit.result.cache moa/api/app/tests/coverage.xml moa/api/app/tests/Model/Thrive/RopQuiz/TestTransport.php moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/Transport.php moa/api/app/tests/.coverage-cache/d51bfa92fcbdf6c5b3f6997707376a74 moa/api/app/tests/.coverage-cache/f63c743cb8d73cb9f0eb74aafaa681af moa/api/app/tests/.coverage-cache/65b147f7b8638891437da99c2ef562e6 moa/api/app/tests/.coverage-cache/e5fbcdaa43d4e70ffd85093840526aab moa/api/app/tests/.coverage-cache/64dad6a22ff33c1c4cc9cf5fa3ade265

⎿ [ { "appId": 261990055, "appName": "PROD-MOA-API", "category": "http", "component": "Guzzle 6", "duration": 0.05092, "duration.ms": 50.92, "entity.guid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "entity.name": "PROD-MOA-API", "entityGuid": "MjY0OTkzMnxBUE18QVBQTElDQVRJT058MjYxOTkwMDU1", "guid": "d19ecc467eac7d1a", "host": "tm-prd-api-useast1-6117", "http.method": "POST", "http.statusCode": 500, "http.url": "https://api2.thrivemarketinternal.com/customer-score-service/customer/fetchCartPrefill", "id": "d19ecc467eac7d1a", "name": "External/api2.thrivemarketinternal.com/all", "parent.id": "e5d2977e7dd0cd9a", "parentId": "e5d2977e7dd0cd9a", [..snip.. 114 more lines]

⏺ Found it! The ML service customer-score-service/customer/fetchCartPrefill is returning HTTP 500 errors. Let me check the timeline.

⏺ Bash(newrelic nrql query --query "SELECT count() FROM Span WHERE appName = 'PROD-...) ⏺ Bash(newrelic nrql query --query "SELECT count() FROM Span WHERE appName = 'PROD-...) ⎿ Exit code 1 level=fatal msg="json: cannot unmarshal array into Go struct field NRDBResultContainer.data.Actor.Account.NRQL.otherResult of type nrdb.NRDBResult"

⎿ Exit code 1 level=fatal msg="NRQL Syntax Error: Error at line 1 position 117, unexpected '\'"

⏺ Bash(newrelic nrql query --query "SELECT count() FROM Span WHERE appName = 'PROD-...) ⏺ Bash(newrelic nrql query --query "SELECT count() FROM Span WHERE appName = 'PROD-...) ⎿ [ { "beginTimeSeconds": 1768294952, "count": 0, "endTimeSeconds": 1768296752 }, { "beginTimeSeconds": 1768296752, "count": 0, "endTimeSeconds": 1768298552 }, { "beginTimeSeconds": 1768298552, "count": 0, "endTimeSeconds": 1768300352 }, { "beginTimeSeconds": 1768300352, "count": 0, "endTimeSeconds": 1768302152 [..snip.. 102 more lines]

⎿ [ { "count": 15, "facet": "200", "http.statusCode": "200" }, { "count": 3, "facet": "500", "http.statusCode": "500" } ]

⏺ The 500 errors from fetchCartPrefill are limited (only 3), but there are many more quiz failures. The issue is likely that the ML service returns 200 but with empty product lists. Let me look at the facade and find where the quiz data comes from.

⏺ Read(/Users/justinabrahms/src/github.com/thrivemarket/magento/moa/api/app/classes/Moa/API/Model/Thrive/RopQuiz/Facade.php) ⎿ 1→<?php 2→ 3→declare(strict_types = 1); 4→ 5→namespace Moa\API\Model\Thrive\RopQuiz; 6→ 7→use Mage_Customer_Model_Customer as Customer; 8→use Mage_Sales_Model_Quote as Quote; 9→use Moa\API\Model\Thrive\RopQuiz\Step\CartReviewHandler; 10→use Moa\API\Model\Thrive\RopQuiz\Step\CategorySelectionHandler; 11→use Moa\API\Model\Thrive\RopQuiz\Step\ProductSelectionHandler; 12→ 13→use Moa\API\Model\Thrive\RopQuiz\Step\StepHandlerRegistry; 14→use Moa\API\Model\Thrive\RopQuiz\Transport as PrefillItemsTransport; 15→use Moa\API\Provider\MagentoProvider; 16→use Thrive_CartPrefill_Model_RopQuiz_State as State; 17→ 18→/** 19→ * ROP Quiz response facade 20→ * ------------------------- [..snip.. 615 more lines]

⏺ Now I see the flow. The loadMLData() method calls fetchCartPrefillRecs() and processes the response. Let me check the DataScience API to see how HTTP status codes are handled.

⏺ Grep(fetchCartPrefillRecs) ⎿ No files found

⏺ Grep(fetchCartPrefillRecs) ⎿ No files found

⏺ Glob(/thrive_datascience//.php) ⏺ Glob(/DataScience//.php) ⎿ No files found

⎿ /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Model/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Helper/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Helper/Raichu.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Model/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Model/Product.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Model/Resource/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Model/Resource/Bia/Rating/Collection.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Helper/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Helper/Data.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Helper/Raichu.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Model/Product.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Test/Model/Resource/Bia/Rating.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.1-0.0.2.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.10-0.0.11.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.5-0.0.6.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.6-0.0.7.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.7-0.0.8.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.8-0.0.9.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/data/thrive_datascience_setup/data-upgrade-0.0.9-0.0.10.php /Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/sql/thrive_datascience_setup/install-0.0.1.php [..snip.. 11 more lines]

⏺ Read(/Users/justinabrahms/src/github.com/thrivemarket/magento/magento/app/code/local/Thrive/DataScience/Model/Api.php) ⎿ 1→<?php 2→ 3→declare(strict_types = 1); 4→ 5→use GuzzleHttp\Client; 6→use GuzzleHttp\RequestOptions; 7→ 8→/** 9→ * Enum for PLP ranking entity types used in Data Science API 10→ / 11→enum Thrive_DataScience_Model_PLPRankingEntityType: string 12→{ 13→ case CATEGORY = 'category_plp_ranking'; 14→ case ATTRIBUTE = 'attribute_plp_ranking'; 15→} 16→ 17→class Thrive_DataScience_Model_Api extends Varien_Object 18→{ 19→ /* 20→ * Cache tag for DataScience [..snip.. 703 more lines]

⏺ I've completed my investigation. Here's what I found:

Summary

Root Cause: The /rop/quiz/new endpoint is failing because the ML service (customer-score-service/customer/fetchCartPrefill) is returning empty product lists, triggering a LogicException in QuizStateService.php:179:

LogicException: No ROP Quiz eligible products found in ML response

Timeline: Failures spiked at exactly 11:45:11 PST today, correlating precisely with your report.

Key Findings

  1. Error Pattern: The endpoint returns HTTP 200 but with response_success: false and response_status: 400 in the body. The actual error is:

    • error_message: "Failed to start a new quiz"

  2. Failure Volume:

    • Before 11:45am: 0-4 failures per 15-minute window
    • After 11:45am: 62 → 174 → 158 → 112 → 143 failures per 15-minute window

  3. Code Flow:

    • Facade::createNewQuiz() → startQuiz() → loadMLData()
    • loadMLData() calls fetchCartPrefillRecs() to the CSS service
    • Response is processed by Transport::processPrefillResponse()
    • QuizStateService::validateRopQuizData() validates the response
    • If eligible_product_ids is empty → throws LogicException

  4. External Service: Some calls to fetchCartPrefill are returning HTTP 500, but most return 200 with empty product data.

Likely Causes

Given your mention of "HTTP status codes change on master branch", this could be:

  1. CSS/ML service deployment around 11:45am that changed response format or broke product recommendations
  2. MOA API change in how it processes the CSS response (checking $response['data'][$customerId] differently)
  3. Response handling change where the ML service now returns a different structure when there's an issue

Recommended Next Steps

  1. Check if there was a deployment to customer-score-service around 11:45am
  2. Verify the CSS endpoint response format hasn't changed
  3. Check the MOA API deployment logs for what changed on master

Do you want me to look at recent git commits or investigate the CSS service further?

share /share

⏺ Bash(~/.claude/scripts/share-session.sh "$(pwd)")

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