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[Error] unhandlederror-Tool "renderMermaidDiagram" was not contributed. #326643

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#326651
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[Error] unhandlederror-Tool "renderMermaidDiagram" was not contributed.#326643
#326651
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justschen
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ai-analyzedAI automation workflow has run an analysis of this issue and provided a comment.ai-generatedGenerated by AI automation workflowsbugIssue identified by VS Code Team member as probable bugerror-telemetryVS Code - Issues generated by telemetryinsiders-releasedPatch has been released in VS Code Insidersrecent-regressionstable-anomaly
Milestone
1.131.0

Description

@vs-code-engineering
vs-code-engineering
bot
opened on Jul 20, 2026

Error Message

unhandlederror-Tool "renderMermaidDiagram" was not contributed.

Stack Trace

⚠️ Stack not deminified — no frames could be mapped to original source. The frames below are minified; line/column numbers refer to the bundled JavaScript, not the original TypeScript source. To deminify, either re-run the create_issue MCP tool with the VS Code build commit hash (and, for extension errors, the extension id + version), or call the standalone deminify_stack MCP tool.

registerToolImplementation@https:/<REDACTED: user-file-path>:3408:5755 $registerTool@https:/<REDACTED: user-file-path>:1020:110119 _doInvokeHandler@https:/<REDACTED: user-file-path>:5170:33169 _invokeHandler@https:/<REDACTED: user-file-path>:5170:32915 _receiveRequest@https:/<REDACTED: user-file-path>:5170:31696 _receiveOneMessage@https:/<REDACTED: user-file-path>:5170:30530 <REDACTED: user-file-path><@https:/<REDACTED: user-file-path>:5170:28602 _deliver@https:/<REDACTED: user-file-path>:433:3268 fire@https:/<REDACTED: user-file-path>:433:3587 <REDACTED: user-file-path>:/<REDACTED: user-file-path>:5170:16779

Details

Property Value
Bucket ID f13ee0a1-f38f-bf36-4eb4-cc38d0488458
Version 1.129.1
Commit 8a7abeba
Last Seen Sun Jul 19 2026 23:55:47 GMT+0000 (Coordinated Universal Time)
Platforms Linux, Mac, Windows, Web
Product VSCode

This issue was automatically created from the VS Code Errors Dashboard

Activity

  1. vs-code-engineering
    assigned
    Bryan Chen (bryanchen-d)
    on Jul 20, 2026
  2. vs-code-engineering
    added
    bugIssue identified by VS Code Team member as probable bug
    error-telemetryVS Code - Issues generated by telemetry
    recent-regression
    stable-anomaly
    ai-generatedGenerated by AI automation workflows
    *fixTrigger a agentic workflow to provide analysis and propose PR.
    on Jul 20, 2026

  3. vs-code-engineering commented on Jul 20, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Jul 20, 2026 – with VS Code Engineering
    ContributorAuthor

    Stable Release Anomaly Details

    • Anomaly type: new (bucket first appears in current stable)
    • Previous stable: 1.128.1
    • Current stable: 1.129.1 — 537 users
    • Bucket: f13ee0a1-f38f-bf36-4eb4-cc38d0488458

    Tool renderMermaidDiagram was not contributed — a chat/agent tool invocation references a tool that is not registered in this build. No prior tracking issue found.

    ⚠️ Server-side deminification returned no-frames-mapped; the stack in the issue body may be minified. Manual investigation recommended.

    Generated by errors-stable-scan · 908.6 AIC · ⌖ 27.4 AIC · ⊞ 49.7K · ◷

  4. vs-code-engineering
    removed
    *fixTrigger a agentic workflow to provide analysis and propose PR.
    on Jul 20, 2026
  5. vs-code-engineering
    assigned
    Bhavya U (bhavyaus)
    on Jul 20, 2026
  6. vs-code-engineering
    added
    ai-analyzedAI automation workflow has run an analysis of this issue and provided a comment.
    on Jul 20, 2026
  7. vs-code-engineering
    added a commit that references this issue on Jul 20, 2026

    fix: register LM tools extension point handler at BlockStartup (fixes #…

    79996f6
  8. vs-code-engineering
    unassigned
    Bryan Chen (bryanchen-d)
    on Jul 20, 2026
  9. Bhavya U (bhavyaus)
    assigned
    Justin Chen (justschen)
    and unassigned
    Bhavya U (bhavyaus)
    on Jul 23, 2026
  10. vs-code-engineering
    closed this as completedin #326651on Jul 23, 2026
  11. vs-code-engineering
    added a commit that references this issue on Jul 23, 2026

    fix: register LM tools extension point handler at BlockStartup (fixes #…

    6d18451
  12. vs-code-engineering
    added
    unreleasedPatch has not yet been released in VS Code Insiders
    on Jul 23, 2026
  13. vs-code-engineering
    added this to the 1.131.0 milestone on Jul 23, 2026
  14. vs-code-engineering
    added
    insiders-releasedPatch has been released in VS Code Insiders
    and removed
    unreleasedPatch has not yet been released in VS Code Insiders
    on Jul 23, 2026
  15. vs-code-engineering
    locked and limited conversation to collaborators on Sep 6, 2026
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ai-analyzedAI automation workflow has run an analysis of this issue and provided a comment.ai-generatedGenerated by AI automation workflowsbugIssue identified by VS Code Team member as probable bugerror-telemetryVS Code - Issues generated by telemetryinsiders-releasedPatch has been released in VS Code Insidersrecent-regressionstable-anomaly

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