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AI_APICallError: messages.157: all messages must have non-empty content except for the optional final assistant message #2655
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This is with anthropic claude opus 4.1, opencode 0.9.11, nushell on macos.
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github-actions commentedon Sep 17, 2025
This issue might be a duplicate of existing issues. Please check:
Feel free to ignore if none of these address your specific case.
rekram1-node commentedon Sep 17, 2025
I just fixed this: #2651
Assuming you had a message you aborted in the session?
U may be able to get around this by doing a /undo and then continuing
Either way: in next release this should be fixed!
esafak commentedon Sep 17, 2025
Aborting often results in such errors, yes. Does undo delete the last entry?
rekram1-node commentedon Sep 17, 2025
Yeah it will rewind to your last message so the most recent loop + last message you sent are all "deleted" (you can hit /redo too) and the prompt box will be populated with the last msg you sent
rekram1-node commentedon Sep 18, 2025
closing since commit to fix has been merged, will be in next release
arshbot commentedon Dec 27, 2025
Running into this issue again, /undo doesn't seem to get past it. Occurred after linking anthropic mid chat. chat window froze and window had to be closed.
andymac4182 commentedon Jan 4, 2026
I am still getting this. It appears to have happened again.
rekram1-node commentedon Jan 4, 2026
@andymac4182 can u share a session?
arshbot commentedon Jan 4, 2026
Can reproduce by starting a session with glm, and later switching to any anthropic model.
rekram1-node commentedon Jan 4, 2026
ahh
madeleineostoja commentedon Feb 4, 2026
Also still seeing this error, exclusively when interrupting an agent while thinking
kiennq commentedon Feb 7, 2026
I got this issue with Copilot Claude model, we should expand the check for trimming to all anthropic models, regardless of ai-sdk.