claude-code - 💡(How to fix) Fix [Bug] Socket connection closed unexpectedly during Anthropic API request

[{"error":"Error: 1: Command failed with ERR_STREAM_PREMATURE_CLOSE: code --force --install-extension anthropic.claude-code\nPremature close \n at Qf1 (/$bunfs/root/src/entrypoints/cli.js:1573:4045)\n at async df1 (/$bunfs/root/src/entrypoints/cli.js:1573:1435)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-20T11:48:21.534Z"},{"error":"The socket connection was closed unexpectedly. For more information, pass verbose: true in the second argument to fetch()","timestamp":"2026-04-20T11:57:25.023Z"}]

TL;DR

Pass verbose: true in the second argument to fetch() to gather more information about the unexpected socket connection closure.

Guidance

• The error message suggests a premature closure of the socket connection, which may be related to the fetch() call.
• To troubleshoot, pass verbose: true in the second argument to fetch() as recommended in the error message.
• Verify that the fetch() call is properly configured and that the server is responding correctly.
• Check the network connection and any proxy settings that may be interfering with the request.

Example

No code snippet is provided as the issue does not contain sufficient information about the fetch() call.

Notes

The provided information is limited, and the root cause of the issue is unclear. Gathering more information with verbose: true may help identify the problem.

Recommendation

Apply workaround: Pass verbose: true in the second argument to fetch() to gather more information about the issue, as this may help identify the root cause of the problem.