Missing Tool Result Block for Tool Use ID toolu_01FCHoHXsqvL3aD5eKGMbqhk

Resolved 💬 3 comments Opened Jul 25, 2025 by andreadellacorte Closed Jan 4, 2026

Bug Description

continue

⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.34: tool_use ids were found without tool_result blocks immediately after: toolu_01FCHoHXsqvL3aD5eKGMbqhk. Each tool_use block must
have a corresponding tool_result block in the next message."}}

Environment Info

  • Platform: darwin
  • Terminal: iTerm.app
  • Version: 1.0.59
  • Feedback ID: bf371c61-3e3a-46c5-9a01-4ca383fa56f6

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at hJ (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:1184)\n    at file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:912\n    at Array.map (<anonymous>)\n    at $V (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:903)\n    at K_B (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2417:8747)\n    at RM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Tv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42847)\n    at Rv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38368)\n    at YS (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38296)\n    at lM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38150)","timestamp":"2025-07-25T12:47:11.069Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at hJ (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:1184)\n    at file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:912\n    at Array.map (<anonymous>)\n    at $V (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:903)\n    at K_B (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2417:8747)\n    at RM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Tv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42847)\n    at Rv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38368)\n    at YS (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38296)\n    at lM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38150)","timestamp":"2025-07-25T12:47:11.087Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at hJ (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:1184)\n    at file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:912\n    at Array.map (<anonymous>)\n    at $V (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:903)\n    at K_B (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2417:8747)\n    at RM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at Tv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42847)\n    at Rv (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38368)\n    at YS (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38296)\n    at lM (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38150)","timestamp":"2025-07-25T12:47:11.091Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at hJ (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:1184)\n    at file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:912\n    at Array.map (<anonymous>)\n    at $V (file:///Users/andreadellacorte/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1491:903)\n    at K_B (file:/

Note: Error logs were truncated.

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