@freedomoclock I can not tell you the exact reason for this problem but it looks like some server related configuration issue or .htaccess file issue.
Firstly, I recommend you to please contact your hosting provider regarding this.
If issue still persists then I recommend you to install QloApps in a new directory outside of any previous QloApps installation directories.
For eg: If your old installation was located at: .../dir/QloApps_Old, I recommend using a new directory for example: ../dir1/QloApps_New.
After this, If issue remains unresolved please raise a ticket at https://support.uvdesk.com/en/customer/create-ticket/ and provide your FTP details and admin login credentials so that we can check it on your server.