Bug Report all messages must have non-empty content except for the optional final assistant message

[jiwoo-dev]

Bug Description

Environment Info

• Platform: linux
• Terminal: vscode
• Version: 1.0.53
• Feedback ID: 507f7995-4b4c-4975-ae1c-760aac7db5ab

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.0: all messages must have non-empty content except for the optional final assistant message\"}}\n    at eQ.generate (file:///home/mman/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1180:6428)\n    at k$.makeStatusError (file:///home/mman/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1197:2101)\n    at k$.makeRequest (file:///home/mman/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1197:5315)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-07-17T04:25:01.491Z"}]

[wyuenho]

I get this a lot in Claude Code as well, no idea what's happening cos clearly the prompt wasn't empty

[pirate]

same, seeing this a ton on macOS

[nick-myers-dt]

I am repeatedly encountering this issue, and only ending the session and restarting (and losing the context) resolves it for a time.

• Platform: MacOS 15.5 (24F74)
• Version: Claude Version 1.0.90
• Terminal: zsh 5.9 (arm64-apple-darwin24.0)

API Error: 400

{"type":"error","error":{"type":"invalid_request_error","message":"messages.55: all messages must have non-empty content except for the optional final assistant message"},"request_id":"req_012CBWBhLqyec5MTmFgDnauE"}

[groeney]

I am also seeing this error -- happy to share context data if helpful.

[davidpasztor]

I'm also experiencing this and it's a really annoying bug as the only way to fix it is to restart claude, which means losing all context. Would be great to get this fixed.

[github-actions[bot]]

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[notkearash]

bump for stopping the autoclose.