claude-code - 💡(How to fix) Fix [Bug] Crash on subagent start: Box component nesting error in Ink renderer [3 comments, 4 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/{user}/.local/share/claude/versions/2.1.118 (expected in multi-process scenarios)\n at ai_ (/$bunfs/root/src/entrypoints/cli.js:2756:2177)\n at IK8 (/$bunfs/root/src/entrypoints/cli.js:2756:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T05:54:52.057Z"}]

TL;DR

The crash on subagent start is likely due to a rendering issue with the Ink renderer, where a <Box> component is being nested inside a <Text> component, and a workaround may involve modifying the component structure or updating the renderer.

Guidance

• Verify that the component structure is correct and that <Box> is not being nested inside <Text> unnecessarily.
• Check the Ink renderer documentation for any known issues or limitations related to component nesting.
• Consider updating the Ink renderer to a newer version, if available, to see if the issue is resolved.
• Review the error log to ensure that the Lock acquisition failure is not related to the crash, as it is marked as NON-FATAL.

Example

No code snippet is provided as the issue does not contain sufficient information about the component structure or the Ink renderer implementation.

Notes

The issue may be specific to the macOS Darwin 25.3.0 environment or the Version 2.1.118 of the software, and further investigation may be required to determine the root cause.

Recommendation

Apply workaround: Modify the component structure to avoid nesting <Box> inside <Text>, as this is the most likely cause of the crash, and updating the renderer may not be feasible or available.