claude-code - 💡(How to fix) Fix [Bug] /copy command fails to copy last Claude response to clipboard as of 2.1.107 [2 comments, 2 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/slz/.local/share/claude/versions/2.1.107 (expected in multi-process scenarios)\n at bd_ (/$bunfs/root/src/entrypoints/cli.js:2334:2153)\n at nt6 (/$bunfs/root/src/entrypoints/cli.js:2334:1233)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T17:18:47.729Z"}]

TL;DR

The /copy command may be failing due to a lock acquisition issue, and a potential workaround is to manually copy the response using pbcopy.

Guidance

• The error message suggests a lock acquisition failure, which might be related to the multi-process scenario, so checking the lock mechanism or running the command in a single-process environment could help.
• Verify that the /tmp/claude/response.md file is being generated correctly and contains the expected response.
• Try running the command outside of tmux to see if the issue is specific to the terminal environment.
• Check the documentation for any known issues or workarounds related to lock acquisition failures in version 2.1.107.

Example

No code snippet is provided as it's not clearly supported by the issue.

Notes

The issue might be specific to the darwin platform or the tmux terminal, and further investigation is needed to determine the root cause.

Recommendation

Apply workaround: manually copy the response using pbcopy until a more permanent fix is available, as the lock acquisition issue may be a known problem in version 2.1.107.