[Bug] Anthropic API Error: Tool Use Concurrency Limitation

Bug Description
 API Error: 400 due to tool use concurrency issues. Run /rewind to recover the conversation.

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.0.15
• Feedback ID: c2303775-787e-4f35-b150-1c8fcce41567

Errors

[{"error":"SyntaxError: Unexpected token 'I', \"I apologiz\"... is not valid JSON\n    at JSON.parse (<anonymous>)\n    at file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:62:719\n    at Q (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:8:15093)\n    at Vs2 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:753:25468)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-10-18T21:13:54.345Z"},{"error":"Ku1: Another process is currently installing an update\n    at TX1 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1739:1764)\n    at file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2637:21516\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-10-18T21:14:10.135Z"},{"error":"Ku1: Another process is currently installing an update\n    at TX1 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1739:1764)\n    at file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2637:21516\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-10-18T21:14:33.146Z"},{"error":"AxiosError: Request failed with status code 403\n    at AO (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:24:1136)\n    at BrotliDecompress.<anonymous> (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:29:9845)\n    at BrotliDecompress.emit (node:events:530:35)\n    at BrotliDecompress.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1698:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)\n    at H81.request (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:31:2129)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async X6Q (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2579:1062)\n    at async F6Q (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2579:2055)\n    at async Object.call (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2579:8350)\n    at async nS5 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2492:64762)\n    at async c2Q (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2492:62271)","timestamp":"2025-10-18T21:14:48.818Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.4: `tool_use` ids were found without `tool_result` blocks immediately after: toolu_011MuevdGQ9JJQXN3SxKYvEU. Each `tool_use` block must have a corresponding `tool_result` block in the next message.\"},\"request_id\":\"req_011CUFMbzATFeNPVdpJweFyC\"}\n    at N4.generate (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:428:25698)\n    at Ky.makeStatusError (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:573:2117)\n    at Ky.makeRequest (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:573:5330)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async lD1.model (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3219:19050)\n    at async lD1 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2492:39781)\n    at async awQ (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3219:19204)\n    at async file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3219:13417\n    at async zp0 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3219:4415)\n    at async xB1 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3219:13387)","timestamp":"2025-10-18T21:14:51.613Z"},{"error":"Ku1: Another process is currently installing an update\n    at TX1 (file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1739:1764)\n    at file:///C:/Users/jmumo/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2637:21516\n    at process.processTicksAndRejections (node:internal/

Note: Error logs were truncated.