AI_APICallError: messages.157: all messages must have non-empty content except for the optional final assistant message

[esafak]

This is with anthropic claude opus 4.1, opencode 0.9.11, nushell on macos.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• AI_APICallError: messages: final assistant content cannot end with trailing whitespace #2546: Similar API error about message content validation with trailing whitespace
• "AI_APICallError: Text content blocks must contain non-whitespace text" on /compact #1681: Related error about text content blocks requiring non-whitespace text
• AI_APICallError: messages: final assistant content cannot end with trailing whitespace #1295: Same exact error about final assistant content and trailing whitespace

Feel free to ignore if none of these address your specific case.

[rekram1-node]

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]

Aborting often results in such errors, yes. Does undo delete the last entry?

[rekram1-node]

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]

closing since commit to fix has been merged, will be in next release