[Bug] Anthropic API Error: Invalid JSON Request Body During File Edit

Resolved 💬 3 comments Opened Sep 15, 2025 by tennox Closed Sep 19, 2025

Bug Description
during/after file editing, I got this:

       320 -      print $"(ansi yellow_bold)($cd_command)(ansi reset)"
       320 +      if not $quiet {
       321 +          print $"(ansi yellow_bold)($cd_command)(ansi reset)"
       322 +      }
       323
       324        # Copy to clipboard if wl-copy is available
       325        # if (which wl-copy | is-not-empty) {
  ⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"The request
    body is not valid JSON: no low surrogate in string: line 1 column 118482 (char
    118481)"},"request_id":"req_011CT9yPZ9R8joGAkGuGDR79"}

> hickup, continue
  ⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"The request
    body is not valid JSON: no low surrogate in string: line 1 column 118482 (char
    118481)"},"request_id":"req_011CT9yQZLrMgA9ohUNyC13Z"}

Environment Info

  • Platform: linux
  • Terminal: alacritty
  • Version: 1.0.109
  • Feedback ID: a7eba5c7-9514-468f-b04f-c453afa35897

Errors

[{"error":"SyntaxError: Unexpected non-whitespace character after JSON at position 57\n    at JSON.parse (<anonymous>)\n    at file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:733:9932\n    at Q (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:713:13288)\n    at at2 (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1095:1982)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-15T08:28:34.267Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at _V (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:1184)\n    at file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:912\n    at Array.map (<anonymous>)\n    at UX (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:903)\n    at iaB (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:3556:13837)\n    at lD (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:84:19415)\n    at wl (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:42814)\n    at V9 (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38355)\n    at yf (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38283)\n    at BC (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38137)","timestamp":"2025-09-15T09:13:08.265Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at _V (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:1184)\n    at file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:912\n    at Array.map (<anonymous>)\n    at UX (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:903)\n    at iaB (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:3556:13837)\n    at lD (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:84:19415)\n    at wl (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:42814)\n    at V9 (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38355)\n    at yf (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38283)\n    at BC (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38137)","timestamp":"2025-09-15T09:13:08.285Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at _V (file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:1184)\n    at file:///nix/store/didsrxk70gcr7y3xfj0vcm3a8fm9jyr3-claude-code-1.0.109/lib/node_modules/@anthropic-ai/claude-code/cli.js:1735:912\n    at Array.map (<anonymous>)\n    at UX (file:///nix/store/didsrxk

Note: Error logs were truncated.

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