[Data upload] BIOM format - "Error:"

I’ve used MicrobiomeAnalyst with input files exported from Qiime2 successfully.

Now when I wanted to do the same thing with a larger dataset (2x samples) when uploading all needed files for the BIOM format I only receive the following error:

Error:

that’s it.

If the metadata files was misformatted it would complain and the error would specify what is wrong, but now there is no further message.

I’ve generated the needed files following the example here:

did the same thing for a new dataset and it doesn’t work. The files from the previous dataset upload without issues.

Here are my input files:

I checked the format, it looks the same as the format of the previous dataset. Is there maybe a sample size limit?

Thanks.