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[Bug] Anthropic API Error: Missing Tool Result Block for Tool Use #6585

@anshulsao

Description

@anshulsao

Bug Description
API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.334: tool_use ids were found without tool_result blocks immediately after:
toolu_01JVs39BSHkoCusxq1zMrKyu. Each tool_use block must have a corresponding tool_result block in the next message."},"request_id":"req_011CSW3pWGJKemGgW4kcQLT1"}

Environment Info

  • Platform: darwin
  • Terminal: iTerm.app
  • Version: 1.0.92
  • Feedback ID: de39fd43-1d39-4444-8f67-b4dc82087302

Errors

[{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n    at Socket.onChildStdout (node:child_process:481:14)\n    at Socket.emit (node:events:507:28)\n    at Socket.emit (node:domain:489:12)\n    at addChunk (node:internal/streams/readable:559:12)\n    at readableAddChunkPushByteMode (node:internal/streams/readable:510:3)\n    at Readable.push (node:internal/streams/readable:390:5)\n    at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)","timestamp":"2025-08-26T08:57:35.536Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at DV (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:1184)\n    at file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:912\n    at Array.map (<anonymous>)\n    at BX (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:903)\n    at YgB (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3167:9171)\n    at $z (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at eQ (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at jz (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-26T08:57:38.606Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at DV (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:1184)\n    at file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:912\n    at Array.map (<anonymous>)\n    at BX (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:903)\n    at YgB (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3167:9171)\n    at $z (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at eQ (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at jz (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-26T08:57:38.607Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at DV (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:1184)\n    at file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:912\n    at Array.map (<anonymous>)\n    at BX (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1755:903)\n    at YgB (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3167:9171)\n    at $z (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at eQ (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at _b (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at jz (file:///Users/anshulsao/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-26T08:57:38.608Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at DV (file:/

Note: Error logs were truncated.

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