›_ Claude Code Issues
Claude Code Issues / #59033

[BUG] Unhandled Case [object Object]

Resolved 💬 70 comments Opened May 14, 2026 by danakowalski-vvet Closed May 15, 2026
💡 Likely answer: A maintainer (hackyon-anthropic, collaborator) responded on this thread — see the highlighted reply below.

Preflight Checklist

  • [x] I have searched existing issues and this hasn't been reported yet
  • [x] This is a single bug report (please file separate reports for different bugs)
  • [x] I am using the latest version of Claude Code

What's Wrong?

Using Claude Code V.S. code extension, and conversation window. This has been occurring regularly since the extension update yesterday. Yes, this is informative. Here's what the log says happened:

Timestamp Event What it means
06:48:17.166 Request sent to /v1/messages Client → Anthropic API
06:48:20.733 First chunk received Stream opened, ~3.5s — normal
06:48:35.748 stream_idle_partial warning, 15s idle, 650 bytes total Server stopped sending mid-response
06:48:50.792 sdk_stream_ended_no_result with had_error: true Stream terminated without completing
06:49:02.742 Another stall warning, 686 bytes total Reconnect/retry on a still-stale stream
Root cause: server-side stream stall. The Anthropic API accepted the request, started streaming a response (~650 bytes in — that's only a sentence or two of output), then stopped sending data and eventually closed the stream with an error flag. This is not a tool execution issue, not a problem with our conversation, and not the VSCode extension crashing. It's the API-side stream completing partially then erroring.

Likely upstream causes (in rough order of likelihood):

Transient API incident — check status.anthropic.com for 2026-05-14 ~06:48-06:49 PT (the log is in UTC offset: those are local 06:48 entries; the UTC equivalents are 10:48 UTC per the [DEBUG] lines). Capacity hiccups or partial outages produce exactly this signature.
Mid-generation internal error — the model started a response, hit some inference-side issue (e.g., a serving worker failure), and the upstream terminated the stream without a clean error code, just a connection close.
Network blip — less likely given the SDK's had_error: true flag rather than a clean disconnect.
What this means for our work: nothing's broken. Tool calls execute on the server before the response streams back to you — so when I do an Edit/Write/Bash, the action lands regardless of whether the response that describes the action makes it to you intact. That's why the files were always correct when you checked them, even after each red box.

Practical workaround: if it keeps happening, status page first. If status is green, try Cmd/Ctrl+Shift+P → Developer: Reload Window to reset the extension's state — sometimes a stuck stream reference fouls the next request.

What Should Happen?

it shouldnt error, and I shouldn't have to type anything to continue the process that was running

Error Messages/Logs

Outgoing log_event

2026-05-14 06:48:17.169 [info] From claude: 2026-05-14T10:48:17.159Z [DEBUG] [API:auth] OAuth token check complete

2026-05-14 06:48:17.176 [info] From claude: 2026-05-14T10:48:17.166Z [DEBUG] [API REQUEST] /v1/messages x-client-request-id=f8d36613-8588-4ef0-8e26-23a6c8dbd993 source=sdk

2026-05-14 06:48:17.184 [info] From claude: 2026-05-14T10:48:17.174Z [DEBUG] FileHistory: Added snapshot for a0ba0dc7-3ba1-43af-b5a7-138d7b5f42d7, tracking 3 files

2026-05-14 06:48:20.744 [info] From claude: 2026-05-14T10:48:20.733Z [DEBUG] Stream started - received first chunk

2026-05-14 06:48:35.759 [info] From claude: 2026-05-14T10:48:35.748Z [WARN] [Stall] stream_idle_partial lastChunkAgeMs=15015 bytesTotal=650 idleDeadlineMs=300000

2026-05-14 06:48:50.792 [info] Received message from webview: {"type":"request","channelId":"3jwirxwgs3c","requestId":"tukwuml1op","request":{"type":"log_event","eventName":"sdk_stream_ended_no_result","eventData":{"had_error":true,"subagent_count":0,"message_count":243}}}
2026-05-14 06:48:50.792 [info] Received message from webview: {"type":"request","requestId":"faf0ylilwxo","request":{"type":"update_session_state","sessionId":"d60c918b-b01d-4648-b043-da1fc6a52f35","state":"idle","title":"Review handoff documentation and resume work"}}
2026-05-14 06:49:02.755 [info] From claude: 2026-05-14T10:49:02.742Z [WARN] [Stall] stream_idle_partial lastChunkAgeMs=15005 bytesTotal=686 idleDeadlineMs=300000

Steps to Reproduce

Anytime I ask Claude Code to generate me a test file from a playwright-cli codegen. It also happens intermittently with any question.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.141

Platform

Other

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_

View original on GitHub ↗

70 Comments

danakowalski-vvet · 2 months ago

<img width="807" height="72" alt="Image" src="https://github.com/user-attachments/assets/7fe83fc0-3723-46e2-9f00-83ebb7249441" />

github-actions[bot] · 2 months ago

Found 3 possible duplicate issues:

  1. https://github.com/anthropics/claude-code/issues/58916
  2. https://github.com/anthropics/claude-code/issues/58989
  3. https://github.com/anthropics/claude-code/issues/59013

This issue will be automatically closed as a duplicate in 3 days.

  • If your issue is a duplicate, please close it and 👍 the existing issue instead
  • To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

pmario · 2 months ago

Claude Code version: 2.1.141
VSCode Extension
Windows 11
Same error

<img width="880" height="82" alt="Image" src="https://github.com/user-attachments/assets/fa4ed284-f4ab-404d-91d4-6f68ed0f13ef" />

2026-05-14 14:07:46.206 [info] Received message from webview: {"type":"request","requestId":"7a73t9rzxup","request":{"type":"update_session_state","sessionId":"b531bd4c-200b-43e3-a856-6ed26da4ac75","state":"idle","title":"Minimize ....."}}
````
btcparadigm-1 · 2 months ago

Installed latest version and kept getting the same error

<img width="409" height="78" alt="Image" src="https://github.com/user-attachments/assets/2b026b59-4088-4979-979a-561279a88c14" />

zeyuansunluke · 2 months ago

Same Error

<img width="931" height="64" alt="Image" src="https://github.com/user-attachments/assets/b75afd63-0901-4cc3-90d0-6d78060982a1" />

Joshdw · 2 months ago

Same here, claude code is sadly unusable as it will always fail when asking for user prompt or exiting plan mode. Issue happens on 2.1.141 but I downgraded to 2.1.140 and am not seeing the bug any more.

smartbrat · 2 months ago
Same here, claude code is sadly unusable as it will always fail when asking for user prompt or exiting plan mode. Issue happens on 2.1.141 but I downgraded to 2.1.140 and am not seeing the bug any more.

This worked for now.

jonasfrey · 2 months ago

<img width="888" height="241" alt="Image" src="https://github.com/user-attachments/assets/4c3fa791-d783-4b64-946a-d0d0c0f63f98" />

danakowalski-vvet · 2 months ago
Same here, claude code is sadly unusable as it will always fail when asking for user prompt or exiting plan mode. Issue happens on 2.1.141 but I downgraded to 2.1.140 and am not seeing the bug any more.

extremely unusable the last 14 hours or so

pascalnet · 2 months ago

Just got the same error:

<img width="287" height="66" alt="Image" src="https://github.com/user-attachments/assets/e4b1ea7e-a172-4082-bb59-d38b0a1ece5f" />

mutoatu · 2 months ago

got the same issue on latest mac VS Code

kinphw · 2 months ago

The same error occurred, but when I switched to terminal mode, the error did not occur. It seems to be a VSCode extension issue.

zeyuansunluke · 2 months ago
Same here, claude code is sadly unusable as it will always fail when asking for user prompt or exiting plan mode. Issue happens on 2.1.141 but I downgraded to 2.1.140 and am not seeing the bug any more.

This worked for now

patricktan98 · 2 months ago

same issue too

Can @claude address this as priority too?

<img width="326" height="76" alt="Image" src="https://github.com/user-attachments/assets/0936feb7-625d-4820-99b1-7f5183543462" />

krisworkspace141-stack · 2 months ago

same here...

<img width="362" height="100" alt="Image" src="https://github.com/user-attachments/assets/dd5fc6f3-8bad-4451-b357-c6e5eb66c9f4" />

bcecilpgh · 2 months ago

Having the same issue with 2.1.141 and downgraded to 2.1.140 and the error went away

Zokor · 2 months ago

same problem

murat303 · 2 months ago

This is annoying

bornsl0ppy · 2 months ago

Same issue repeatedly. Resolves by restarting and continuing with /resume , but often also breaks context completely after doing that.

8e7 · 2 months ago

+1, Also have the same issue.

hackyon-anthropic collaborator · 2 months ago

Thanks, we are aware of this issue and should have a fix out with today's release!

mattkenefick · 2 months ago

Happening constantly.

<img width="327" height="73" alt="Image" src="https://github.com/user-attachments/assets/26158107-ad77-4a6a-b7b9-dfc62afc5e3d" />

One bug after another lately :(

zurades · 2 months ago

same here

<img width="550" height="106" alt="Image" src="https://github.com/user-attachments/assets/5379e8fd-1a90-43c4-95af-773ceab61c23" />

downIoads · 2 months ago

same issue here

frostmid · 2 months ago

the same issue

sashachernov9292-ui · 2 months ago

Unhandled case: [object Object]
View output logs · Troubleshooting resources

same issue (

PhotonicVelocity · 2 months ago

Same issue here since yesterday. As with others, so far downgrading to .140 has solved it.

CodeLtDave · 2 months ago

same issue, downgrading also worked for me

simonngai · 2 months ago

<img width="351" height="73" alt="Image" src="https://github.com/user-attachments/assets/330e2762-042e-45a7-9302-249160cb0cd1" />
Same. After upgrading.

fliptrail · 2 months ago

same

BENZOOgataga · 2 months ago

same

PedroFK · 2 months ago

same error here

anurieli · 2 months ago

Same !!!! keep it coming

ebaars · 2 months ago

Unhandled case: [object Object]
View output logs · Troubleshooting resources

shengcheng123 · 2 months ago

Temp workaround is just to downgrade. Pretty easy in VS code, just click "Install specific version":
<img width="501" height="254" alt="Image" src="https://github.com/user-attachments/assets/6afaab02-4c76-4954-94d7-b145e1bd2788" />

Soynido · 2 months ago

Same :)

mayerwin · 2 months ago

Same

elhossary · 2 months ago

same issue

joesutheran · 2 months ago

Same issue, can't pin down what requests cause it. Running skills and responding without requiring skills cause this error intermittently for me in VS Code.

<img width="416" height="86" alt="Image" src="https://github.com/user-attachments/assets/8fd49d8d-90e6-4da1-b5f3-79e97e6c8946" />

kevinblumenfeld · 2 months ago

Same issue.

msj-prog · 2 months ago

Same here on macOS — worth noting since this is currently tagged platform:windows.

  • Extension 2.1.141, macOS 26.3.1
  • Same signature: [Stall] stream_idle_partial … bytesTotal=0 → sdk_stream_ended_no_result with had_error: true, ~650–700 bytes of partial response, red error box. Hits multi-tool-call sequences especially.
  • Downgrading the extension to 2.1.140 resolved it for me — clean runs since, including sequences that reliably stalled on 2.1.141.

Looks like a regression introduced in 2.1.141.

chrisghughes-alt · 2 months ago

I just downgraded to resolve this. Maybe they didn't run /Code-Review? 🗡️

craptree · 2 months ago

same, Mac OS, since today, many different cwds all have the same intermittent issue with this error

BENZOOgataga · 2 months ago

Come on Claude team, I'm faster at shipping things with claude. You can do it!

YagizBasaran · 2 months ago

Guys downgrade to version 2.1.140, it will solve the problem

EliteBrands · 2 months ago

Same here for us:

Claude Code version: 2.1.141
VSCode Extension
Windows 11
Same error

<img width="329" height="76" alt="Image" src="https://github.com/user-attachments/assets/31116f7b-e31f-4014-b9b4-2ae959d574cb" />

R3zil · 2 months ago

Same same.

charleschencui · 2 months ago

Same issue in cursor

Slavison · 2 months ago

Yaay, it's fixed, guys! Update to 2.1.142.

muraterdogann · 2 months ago

and now its down..

claude[bot] contributor · 2 months ago

This is a duplicate of #58897, which was fixed as of version 2.1.142.

baslefeber · 2 months ago

Same for me
VS Code Version: 1.120.0 (Universal)
OS: Darwin arm64 25.3.0
VS code extension

<img width="805" height="61" alt="Image" src="https://github.com/user-attachments/assets/fcd6060a-6244-4f00-bceb-0aa919ccef4c" />

ShotgunDOTexe · 2 months ago
This is a duplicate of #58897, which was fixed as of version 2.1.142.

Hi, I just had to downgrade. It is still not fixed on version 2.1.142. It might be possible that it works for specific people, like it worked for you.

jgerry2002 · 2 months ago

2.1.142 still not fixed.

ZohanBG · 2 months ago

2.1.142 still not fixed.

contteudo · 2 months ago

Same issue here in Cursor. How to solve this?

StableFlux · 2 months ago

+1, hitting the same pattern on 2026-05-15 ~10:51 UTC. Windows 11, Claude Code VS Code extension v2.1.140.

Single stream stalled for 408.3s mid-turn during a series of Edit calls on a ~15KB markdown file. Stream stayed open the whole time and bytes trickled in 36-byte increments every ~15s (651 → 1119 bytes over ~7 minutes), then resumed normally and completed the Edits successfully. Same stream_idle_partial warnings every 15s, then Streaming stall detected: 408.3s gap, then Streaming completed with 1 stall(s).

Ruled out local network — pathping/tracert to api.anthropic.com clean, 0% loss across 100 probes/hop, 8ms RTT flat. 6 hops via Digiweb → INEX → Cloudflare. Not the client, not the path.

Source was repl_main_thread, autocompact level ok, no tool errors. File writes landed atomically server-side; only the visible stream was affected.

Adding in case timing/volume helps narrow the window.

muraterdogann · 2 months ago

2.1.140 is working fine atm (Windows+VSC)

bfaucher · 2 months ago

I see this error on versions 2.1.140, 2.1.141 and 2.1.142. Cursor IDE, macOS 15.7.3, M4.

davisjam · 2 months ago

macOS, VSCode IDE, 2.1.140 works for me all day.

danakowalski-vvet · 2 months ago

2.1.142 still has the issue.

closed as a dupe, but the dupe is mac only and I'm on Windows.... which is why I opened this one

sakinurrahman · 2 months ago

Still facing the issue

craptree · 2 months ago

Seems to be fixed since I updated VS Code plugin to 2.1.142.
I am on Mac

On Fri, 15 May 2026 at 20:06, Sakinur Rahman @.***>
wrote:

sakinurrahman left a comment (anthropics/claude-code#59033) <https://github.com/anthropics/claude-code/issues/59033#issuecomment-4462596024> Still facing the issue — Reply to this email directly, view it on GitHub <https://github.com/anthropics/claude-code/issues/59033#issuecomment-4462596024>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEH27KUCYSO4GTPMHUKDK2D425TB3AVCNFSM6AAAAACY54VOWOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DINRSGU4TMMBSGQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: @.***>
shresth01-dev · 2 months ago

Again , i am facing the same issue from last two days , sometime its work , and suddenly at random time its happening again
i am window user

<img width="282" height="48" alt="Image" src="https://github.com/user-attachments/assets/4254d16e-1288-4cba-88c6-587ae1d44b94" />

shresth01-dev · 2 months ago
This is a duplicate of #58897, which was fixed as of version 2.1.142.

but still facing , yesterday i got this issue , after couple of hour of wait i started a new chat and its worked but today randomly i got this error again

stephengardner · 2 months ago

Same here....

hackyon-anthropic collaborator · 2 months ago

For those who are seeing it, can you please update to the latest version 2.1.142 and then restart VSCode to make sure the update has been applied?

jgerry2002 · 2 months ago

latest is 2.1.143. Installed and then restarted VSCode completely. Appears stable so far in a several hour session on windows 11 + vscode 1.120.0

ronaldnnr · 1 month ago

The problem isn't just in VS Code; it also happens in other IDEs. I'm using Anti-Gravity and it returns the same error.

github-actions[bot] · 9 days ago

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.