Can upload a file but nothing shows in the filemanager

[paulUDIS]

My website has
Ubuntu 20
Hestia Control Panel has been updated to v1.7.7.
Moodle 4.2
Marian DB
PHP 8.0

I am trying to upload a file in my Hestia control panel to a folder I called public_old. I want to move my moodle folder from my public to an old one and then delete and upload a newer version of Moodle and run the instalation. . I can create the folder and select a file to upload, watch the indicator tell me it is being uploaded and click done. However when finished it shows no file?
Thanks for your help.
Paul