If I append a promt message while agent of that session is still working, this error is thrown:

It is confirmed that this promt is rejected rather than queued as it won't be processed even if the previous work is done.
In normal circumstance, new promts will be pending and queued up, but in this time it didn't.
I wonder how it is triggered, maybe I pasted a picture? no, it is not uploaded at the first round.
If I append a promt message while agent of that session is still working, this error is thrown:

It is confirmed that this promt is rejected rather than queued as it won't be processed even if the previous work is done.
In normal circumstance, new promts will be pending and queued up, but in this time it didn't.
I wonder how it is triggered, maybe I pasted a picture? no, it is not uploaded at the first round.