@bastien @Komal-Sharma the issue can be the site url in the UVdesk configuration file?
I see the domain has the public folder showed in the address (latest screenshot posted)
In my install I have removed the public folder from the web address but if you have maybe you need put that also in the config file?
uvdesk/config/packages/uvdesk.yaml
Also have you tried to switch to production mode after take a full backup of your UVdesk instance?
For switch to prod you need edit the file uvdesk/.env find the line
APP_ENV=
and replace dev with prod
after that you need clean cache by going in the root uvdesk folder with SSH and using the command php bin/console c:c