by SAMIR ELFADIL.
I am moving from Moodle 3.7.2 to Moodle 4.5, I finished export/import users successfully, when it comes to course, I export them from source site in .mbz and download to my local computer but when I try to upload the .mbz file to new site it doesn't complete, and I keep get the error:
The selected file is not a valid Moodle backup file and can't be restored.
Can anyone help please?
Many thanks