Error in Zip file upload - not being able to submit items

Hello,

Getting error uploading a zip file for a new item. :

Please review the following issues that occurred

Main File(s) is required
Shell command ["zip", "-r", "/data2/marketplace/shared/files/tmp/5ce58b72-00af-48fd-8d67-52728febbb89/Main.zip", "."] failed with status pid 22857 exit 3

Anyone has any idea what it might be? Have uploaded many items before never had such a problem…

Thanks in advance :+1: