[Bug] Anthropic API Error: Invalid Compact Message Content

Bug Description

/compact

⎿  Error: Error during compaction: Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.103: all
messages must have non-empty content except for the optional final assistant message"},"request_id":"req_011CSbHbEKPmXjenLaG9ASeb"}

/compact

⎿  Error: Error during compaction: Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.103: all
messages must have non-empty content except for the optional final assistant message"},"request_id":"req_011CSbHiqiZrACmWYTY1BWt1"}

/compact

⎿  Error: Error during compaction: Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.103: all
messages must have non-empty content except for the optional final assistant message"},"request_id":"req_011CSbHkbCkJpgTrM3n9tapR"}

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 1.0.96
• Feedback ID:

Errors

[{"error":"AxiosError: Request failed with status code 400\n    at bq (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:673:1077)\n    at IncomingMessage.F0 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:674:9955)\n    at IncomingMessage.emit (node:events:519:35)\n    at IncomingMessage.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1701:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)\n    at z21.request (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:676:2088)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async bVA (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:751:8344)\n    at async Io (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:752:30406)\n    at async $w (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:954:581)\n    at async pb6 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:32672)\n    at async nQB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:32945)","timestamp":"2025-08-29T01:01:14.951Z"},{"error":"AxiosError: Request failed with status code 400\n    at bq (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:673:1077)\n    at IncomingMessage.F0 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:674:9955)\n    at IncomingMessage.emit (node:events:519:35)\n    at IncomingMessage.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1701:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)\n    at z21.request (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:676:2088)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async bVA (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:751:8344)\n    at async Io (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:752:30406)\n    at async $w (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:954:581)\n    at async cZ1 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:16264)\n    at async cb6 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:29947)\n    at async file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:31550\n    at async GC0 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:1848)\n    at async lW (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1901:31456)","timestamp":"2025-08-29T01:01:16.078Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"OAuth token has expired. Please obtain a new token or refresh your existing token.\"},\"request_id\":\"req_011CSb6cgJq2j6QpUUWc63ua\"}\n    at k4.generate (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:926:2447)\n    at UP.makeStatusError (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:943:2131)\n    at UP.makeRequest (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:943:5344)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-08-29T01:01:16.380Z"},{"error":"AxiosError: Request failed with status code 400\n    at bq (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:673:1077)\n    at IncomingMessage.F0 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:674:9955)\n    at IncomingMessage.emit (node:events:519:35)\n    at IncomingMessage.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1701:12)\n    

Note: Error logs were truncated.