[Error] [GitHub.copilot-chat] unhandlederror-An unexpected error occurred: {"type":"failed","reason":"Server error: 500","requestI...

[vs-code-engineering]

Error Message

unhandlederror-An unexpected error occurred: {"type":"failed","reason":"Server error: 500","requestId":"18acfbcc-d654-43ec-9fdf-d0578b073853","serverRequestId":""}  Error: An unexpected error occurred: {"type":"failed","reason":"Server error: 500","requestId":"18acfbcc-d654-43ec-9fdf-d0578b073853","serverRequestId":""} 	at Object.n [as fromUnknown] (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:1697:11515) 	at xhr (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2815:13381) 	at ng._performFetch (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14886) 	at async ng._streamEditsImpl (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:15464) 	at async ng.streamEdits (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:13392) 	at async ng.streamEditsWithFiltering (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:12845) 	at async ng.doGetNextEditWithSelection (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:9260) 	at async ng.provideNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:5356) 	at async z2._executeNewNextEditRequest (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:14762) 	at async z2.fetchNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:10410) 	at async z2._getNextEditCanThrow (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:4772) 	at async z2.getNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:2550)

Stack Trace

    at Object.n [as fromUnknown] (../src/util/common/errors.ts:19:9)
    at xhr (../src/extension/xtab/node/xtabProvider.ts:1632:55)
    at mapChatFetcherErrorToNoNextEditReason (../src/extension/xtab/node/xtabProvider.ts:859:39)
    at async ng._streamEditsImpl (../src/extension/xtab/node/xtabProvider.ts:900:22)
    at async ng.streamEdits (../src/extension/xtab/node/xtabProvider.ts:733:10)
    at async ng.streamEditsWithFiltering (../src/extension/xtab/node/xtabProvider.ts:688:10)
    at async ng.doGetNextEditWithSelection (../src/extension/xtab/node/xtabProvider.ts:460:9)
    at async ng.provideNextEdit (../src/extension/xtab/node/xtabProvider.ts:213:13)
    at async z2._executeNewNextEditRequest (../src/extension/inlineEdits/node/nextEditProvider.ts:956:13)
    at async z2.fetchNextEdit (../src/extension/inlineEdits/node/nextEditProvider.ts:702:14)
    at async z2._getNextEditCanThrow (../src/extension/inlineEdits/node/nextEditProvider.ts:427:18)
    at async z2.getNextEdit (../src/extension/inlineEdits/node/nextEditProvider.ts:305:12)
    at Timeout._onTimeout (./src/vs/base/common/errors.ts:32:11)
    at listOnTimeout (node:<REDACTED: user-file-path>:605:17) [not deminified]
    at process.processTimers (node:<REDACTED: user-file-path>:541:7) [not deminified]

Raw Stack Trace (minified)

Error: An unexpected error occurred: {"type":"failed","reason":"Server error: 500","requestId":"18acfbcc-d654-43ec-9fdf-d0578b073853","serverRequestId":""}  Error: An unexpected error occurred: {"type":"failed","reason":"Server error: 500","requestId":"18acfbcc-d654-43ec-9fdf-d0578b073853","serverRequestId":""} 	at Object.n [as fromUnknown] (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:1697:11515) 	at xhr (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2815:13381) 	at ng._performFetch (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14886) 	at async ng._streamEditsImpl (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:15464) 	at async ng.streamEdits (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:13392) 	at async ng.streamEditsWithFiltering (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:12845) 	at async ng.doGetNextEditWithSelection (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:9260) 	at async ng.provideNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:5356) 	at async z2._executeNewNextEditRequest (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:14762) 	at async z2.fetchNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:10410) 	at async z2._getNextEditCanThrow (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:4772) 	at async z2.getNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:2550) 	at Timeout._onTimeout (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:3:12) 	at listOnTimeout (node:<REDACTED: user-file-path>:605:17) 	at process.processTimers (node:<REDACTED: user-file-path>:541:7)

Details

Property	Value
Bucket ID	78693669
Extension Version	0.55.0
Last Seen	Tue Jul 07 2026 23:46:05 GMT+0000 (Coordinated Universal Time)
Platforms	win32
Product	VSCode

---

This issue was automatically created from the VS Code Errors Dashboard

[vs-code-engineering]

Stable Release Anomaly Details

This error was flagged by the stable release anomaly scan comparing consecutive GitHub.copilot-chat stable versions.

Field	Value
Anomaly type	new
Previous stable	0.54.0
Current stable	0.55.0
Total users (all buckets)	~3.6k
Platforms	win32

Signature: An unexpected error occurred: {"type":"failed","reason":"Server error: 500",...} on the NES streaming-fetch path (ng._performFetch → ng.streamEdits → z2.getNextEdit). Server-side 500 surfacing client-side as an unhandled rejection — likely missing client handling of upstream 5xx responses.

Affected buckets (coalesced):

• 78693669 — 1,790 users
• c332f78b — 1,789 users

Extension-mode scan — insider commit-range narrowing is not applicable.

Generated by errors-stable-scan · 2K AIC · ⌖ 91 AIC · ⊞ 52.5K · ◷