[Bug] Unable to start or use Claude Code CLI

Resolved 💬 1 comment Opened May 28, 2026 by adamdroberts Closed Jun 30, 2026

Bug Description
weird error, can't use it at all, anything I send the model it comes back with this.

redacted_thinking blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response

Environment Info

  • Platform: linux
  • Terminal: windows-terminal
  • Version: 2.1.153
  • Feedback ID: aead25c3-1ae3-4bf4-a349-ab9c20a4ebb0

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.1.content.11: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVKRUiV9L62dpByqY21F\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T16:55:48.040Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.1.content.11: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbVKT63n2NxVzhSRV7Caq\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:63519)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-28T16:56:09.870Z"}]

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