claude-code - 💡(How to fix) Fix [Bug] Extended Thinking timeout or performance regression on high/xhigh effort levels [1 comments, 2 participants]

[{"error":"Error: 1: Command failed with ERR_STREAM_PREMATURE_CLOSE: code --force --install-extension anthropic.claude-code\nPremature close \n at jZ1 (/$bunfs/root/src/entrypoints/cli.js:1707:4045)\n at async wZ1 (/$bunfs/root/src/entrypoints/cli.js:1707:1435)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:24:29.767Z"},{"error":"Error: Not connected\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:93:54436)\n at new Promise (native:1:11)\n at request (/$bunfs/root/src/entrypoints/cli.js:93:54381)\n at callTool (/$bunfs/root/src/entrypoints/cli.js:832:9909)\n at uL7 (/$bunfs/root/src/entrypoints/cli.js:4735:3850)\n at JF (/$bunfs/root/src/entrypoints/cli.js:4734:38920)\n at Pa5 (/$bunfs/root/src/entrypoints/cli.js:8302:9185)\n at j (/$bunfs/root/src/entrypoints/cli.js:8302:7815)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:8302:8146)\n at H0 (/$bunfs/root/src/entrypoints/cli.js:478:63174)","timestamp":"2026-04-23T15:35:48.872Z"},{"error":"Error: Not connected\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:93:54436)\n at new Promise (native:1:11)\n at request (/$bunfs/root/src/entrypoints/cli.js:93:54381)\n at callTool (/$bunfs/root/src/entrypoints/cli.js:832:9909)\n at uL7 (/$bunfs/root/src/entrypoints/cli.js:4735:3850)\n at JF (/$bunfs/root/src/entrypoints/cli.js:4734:38920)\n at Pa5 (/$bunfs/root/src/entrypoints/cli.js:8302:9185)\n at j (/$bunfs/root/src/entrypoints/cli.js:8302:7815)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:8302:8146)\n at H0 (/$bunfs/root/src/entrypoints/cli.js:478:63174)","timestamp":"2026-04-23T15:35:48.873Z"},{"error":"Error: Not connected\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:93:54436)\n at new Promise (native:1:11)\n at request (/$bunfs/root/src/entrypoints/cli.js:93:54381)\n at callTool (/$bunfs/root/src/entrypoints/cli.js:832:9909)\n at uL7 (/$bunfs/root/src/entrypoints/cli.js:4735:3850)\n at JF (/$bunfs/root/src/entrypoints/cli.js:4734:38920)\n at J08 (/$bunfs/root/src/entrypoints/cli.js:8302:9615)\n at A (/$bunfs/root/src/entrypoints/cli.js:8302:8679)\n at Pa5 (/$bunfs/root/src/entrypoints/cli.js:8302:9505)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:35:48.873Z"},{"error":"Error: Not connected\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:93:54436)\n at new Promise (native:1:11)\n at request (/$bunfs/root/src/entrypoints/cli.js:93:54381)\n at callTool (/$bunfs/root/src/entrypoints/cli.js:832:9909)\n at uL7 (/$bunfs/root/src/entrypoints/cli.js:4735:3850)\n at JF (/$bunfs/root/src/entrypoints/cli.js:4734:38920)\n at J08 (/$bunfs/root/src/entrypoints/cli.js:8302:9615)\n at closeTabInIDE (/$bunfs/root/src/entrypoints/cli.js:8302:8262)\n at F (/$bunfs/root/src/entrypoints/cli.js:8302:19266)\n at onChange (/$bunfs/root/src/entrypoints/cli.js:8302:20302)","timestamp":"2026-04-23T15:37:03.113Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:13291)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:114:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n at async Cg6 (/$bunfs/root/src/entrypoints/cli.js:439:4214)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:37:23.123Z"},{"error":"Error: Failed to fetch version from https://downloads.claude.ai/claude-code-releases/latest: timeout of 30000ms exceeded\n at Fs1 (/$bunfs/root/src/entrypoints/cli.js:2754:5534)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:37:33.183Z"},{"error":"Error: Failed to fetch version from https://downloads.claude.ai/claude-code-releases/latest: timeout of 30000ms exceeded\n at Fs1 (/$bunfs/root/src/entrypoints/cli.js:2754:5534)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T15:37:33.184Z"},{"error":"Error: Not connected\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:93:54436)\n at new Promise (native:1:11)\n at request (/$bunfs/root/src/entrypoints/cli.js:93:54381)\n at callTool (/$bunfs/root/src/entrypoints/cli.js:832:9909)\n at uL7 (/$bunfs/root/src/entrypoints/cli.js:4735:3850)\n at JF (/$bunfs/root/src/entrypoints/cli.js:4734:38920)\n …

TL;DR

The issue can be mitigated by checking network connectivity and increasing timeout values to handle slow connections.

Guidance

• Verify network connectivity to ensure stable access to https://downloads.claude.ai/claude-code-releases/latest.
• Increase the timeout value in the Fs1 function at /$bunfs/root/src/entrypoints/cli.js:2754:5534 to handle slow connections.
• Check for any firewall or proxy settings that might be blocking the request to https://downloads.claude.ai/claude-code-releases/latest.
• Review the AxiosError timeout value of 5000ms and consider increasing it if necessary.

Example

No code example is provided due to the lack of specific implementation details.

Notes

The provided error logs indicate issues with network connectivity and timeouts. Increasing timeout values and verifying network connectivity may help mitigate the issue. However, without more information about the specific implementation and environment, it's challenging to provide a more detailed solution.

Recommendation

Apply workaround: Increase timeout values and verify network connectivity to mitigate the issue, as the root cause appears to be related to network connectivity and slow responses from the server.