Error on extracting of zip file

i get an error when i try to extract a zip file.
The error i get is “Can’t open zip file at /var/www/nextcloud/data/…/files//…zip”

I don’t see anything in the log file. Only “weird” thing i see is a double slash.
Zip, rar etc… are installed.

Who can help me out with this?

Does this happen on all zip files, or just this one?

oh my god… i’m sorry. The zip files were corrupted. My bad… thanks for your reply