Invalid JSON Request: Malformed Surrogate Character in API Payload

Bug Description
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 284287 (char 284286)"}}

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 1.0.63
• Feedback ID: c00b50c0-38af-4ef1-bd92-b3c651b01c9b

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:912\n    at Array.map (<anonymous>)\n    at DX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:903)\n    at JxB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2647:7746)\n    at pM (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at ov (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42835)\n    at sv (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38356)\n    at _S (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38284)\n    at JR (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38138)","timestamp":"2025-08-06T04:31:06.593Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:912\n    at Array.map (<anonymous>)\n    at DX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:903)\n    at JxB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2647:7746)\n    at pM (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at ov (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42835)\n    at sv (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38356)\n    at _S (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38284)\n    at JR (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38138)","timestamp":"2025-08-06T04:31:06.597Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:912\n    at Array.map (<anonymous>)\n    at DX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:903)\n    at JxB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2647:7746)\n    at pM (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at ov (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42835)\n    at sv (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38356)\n    at _S (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38284)\n    at JR (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38138)","timestamp":"2025-08-06T04:31:06.604Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:912\n    at Array.map (<anonymous>)\n    at DX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:903)\n    at JxB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2647:7746)\n    at pM (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:65:19859)\n    at ov (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:42835)\n    at sv (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38356)\n    at _S (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38284)\n    at JR (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:67:38138)","timestamp":"2025-08-06T04:31:06.605Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at QX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:912\n    at Array.map (<anonymous>)\n    at DX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1608:903)\n    at JxB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:2647:7746)\n    at pM (file:

Note: Error logs were truncated.