[Bug] TypeError: (s || "").toLowerCase is not a function in CLI render loop

Resolved 💬 2 comments Opened Jun 17, 2026 by jportell Closed Jun 20, 2026

Bug Description
⏺ Write(competitors-analysis/constructor.md)

· Envisioning… (11m 1s · ↓ 27.4k tokens · thought for 24s)

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Jaumes-MacBook-Pro
⏵⏵ bypass permissions on (shift+tab to cycle)

ERROR (s || "").toLowerCase is not a function

file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1668:2076

  • Object.p (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1668:2076)
  • Cl4 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2444:6535)
  • er1.render (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2446:2251)
  • Lhz (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2450:1438)
  • (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2450:2116)
  • WA (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:546:21010)
  • $2 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:546:39562)
  • n6 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:546:36928)
  • Q6 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:546:36455)
  • un (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:546:52667)

Environment Info

  • Platform: darwin
  • Terminal: iTerm.app
  • Version: 2.1.104
  • Feedback ID: c6d80bd5-5475-4957-ad4b-28adb4a7d726

Errors

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