XFileSharing Pro - Help please

[uploadadz]

Hello
You purchased additional server files after installation
When I upload a file, I receive this message : https://prnt.sc/krkmgn
Please help me. thank you

[hostlife]

Check if your fileserver url is inaccessible? If you have cloudflare enabled on your fileserver, inactive that.

[admin]

This error usually means that some error occured on file server side. You need to check file server error log for more information.