Architecture graph API 500s — regression, worked ~2 days ago

SonarQube Cloud Architecture
1

Since ~2 days ago the Architecture view no longer loads. I traced it end-to-end: the architecture data uploads fine — only the graph read endpoint 500s.

Environment: Org m-k-freelancer, project M-K-Freelancer_Basic-Sports-AI. CI-based analysis via sonar-scanner (Automatic Analysis OFF), one SonarCloud project covering a Java 25 + Angular monorepo. Worked ~2 days ago, unchanged setup.

A verbose scan (sonar-scanner -Dsonar.verbose=true) shows the scanner computing and successfully uploading the graph:

[INFO]  Loaded core extensions: a3s, architecture, sca

[DEBUG] <-- 200 api.sonarcloud.io/architecture/project-configurations?projectId=…

[DEBUG] Create runtime call graph … (done)

[INFO] ANALYSIS SUCCESSFUL

[DEBUG] --> POST api.sonarcloud.io/architecture/scanner-data <-- 201

[DEBUG] --> POST api.sonarcloud.io/architecture/analysis <-- 201

But the read endpoint the UI calls returns 500:

GET https://api.sonarcloud.io/architecture/graphs?branchId=<id>&organizationId=4bef4c59-…

→ 500 {"message":"Internal Server error"} (35-byte body)

  • 500s for every branch — including a throwaway branch whose architecture data I uploaded seconds earlier (POST → 201). Not stale/missing data.
  • Reproduced via the web UI and sonar api get "/architecture/graphs?…" with a valid org-admin token — not auth/permissions.
  • Quality gate green; only the Architecture graph read fails.

Server refs for your logs:

x-amzn-requestid : 1f9f0926-af7c-478b-a411-18c80a4d5aa4

x-amzn-trace-id : Root=1-6a2d7a14-6918a06a254d1640783f65e5 (2026-06-13 ~15:41 UTC)

Full verbose scan log attached. sonar-debug-scan.log (1.7 MB)

2

Thanks for reporting, Malte, we are investigating, and will post an update shortly.

3

Hi Malte, the issue is now resolved, thanks again for reporting!

4

Hi Paul, can confirm. Both Architecture views load and show data. Thanks for solving the issue.