Bug Description
After parallel execution of tools, "Each tool_use block must have a corresponding tool_result block in the next message" error occurs, and Claude Code become unresponsive.
Environment Info
- Platform: darwin
- Terminal: iTerm.app
- Version: 1.0.56
- Feedback ID: 83303b55-30f5-4b6f-b6ad-0d909bf5cc1a
Errors
[{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:418\n at Object.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:26277)\n at TD9.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:46:15576)\n at fJ (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:312)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)\n at KX (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:34990)","timestamp":"2025-07-19T13:39:25.066Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:418\n at Object.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:26277)\n at TD9.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:46:15576)\n at fJ (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:312)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)\n at KX (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:34990)","timestamp":"2025-07-19T13:39:25.067Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n at IW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:1184)\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:912\n at Array.map (<anonymous>)\n at DW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:903)\n at lT1 (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:4453)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)","timestamp":"2025-07-19T13:39:32.962Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n at IW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:1184)\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:912\n at Array.map (<anonymous>)\n at DW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:903)\n at Object.renderToolResultMessage (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1429:1037)\n at qHB (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2334:1616)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)","timestamp":"2025-07-19T13:39:32.964Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///UserNote: Error logs were truncated.
Bug Description
After parallel execution of tools, "Each
tool_useblock must have a correspondingtool_resultblock in the next message" error occurs, and Claude Code become unresponsive.Environment Info
Errors
[{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:418\n at Object.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:26277)\n at TD9.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:46:15576)\n at fJ (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:312)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)\n at KX (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:34990)","timestamp":"2025-07-19T13:39:25.066Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:418\n at Object.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:26277)\n at TD9.useMemo (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:46:15576)\n at fJ (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1321:312)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)\n at KX (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:34990)","timestamp":"2025-07-19T13:39:25.067Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n at IW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:1184)\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:912\n at Array.map (<anonymous>)\n at DW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:903)\n at lT1 (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:4453)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)\n at VN (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:37900)","timestamp":"2025-07-19T13:39:32.962Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n at IW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:1184)\n at file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:912\n at Array.map (<anonymous>)\n at DW (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1423:903)\n at Object.renderToolResultMessage (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1429:1037)\n at qHB (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2334:1616)\n at aq (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:65:19804)\n at Fy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:42569)\n at Gy (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38118)\n at IO (file:///Users/finn/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:67:38046)","timestamp":"2025-07-19T13:39:32.964Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: svelte\n at file:///UserNote: Error logs were truncated.