[Bug] UserPromptSubmit hook error: Missing required field "hookEventName" in hookSpecificOutput

Bug Description
UserPromptSubmit hook error
Hook JSON output validation failed — hookSpecificOutput is missing required field "hookEventName"

Environment Info

• Platform: linux
• Terminal: ghostty
• Version: 2.1.126
• Feedback ID: 4a5bcb04-de62-47fc-88bd-04493e673acf

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /home/nix010825/.local/share/claude/versions/2.1.126 (expected in multi-process scenarios)\n    at n68 (/$bunfs/root/src/entrypoints/cli.js:2770:2177)\n    at sM6 (/$bunfs/root/src/entrypoints/cli.js:2770:1257)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-01T02:02:37.358Z"}]