Upload to maker world complains "invalid parameters to the slicer"

I tried to upload a model to “maker world” which slices and prints fine without problems. But at the end the upload fails with the message: “invalid parameters to the slicer”.

Whats the problem here?
There is no hint how to fix it…

Have the latest bambustudio version 1.7.7.89
Win 11

If it is a multi plate file I have sometimes found warnings that only come up once when you first slice, or when you scroll through each page in the preview cause these sorts of errors. Also if you can’t sort it you can raise the issue from within Makerworld and they can usually give you more details of what is causing the slicer issue.

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I think could identify the problem now.

If the filaments used on a printing plate are not of the same type, this error message appears.
I had used PLA+ and PLA+silk together, which also works well in practice.
As soon as only one filament type is used, the upload works without any problems.