Social Media hangs on red loading boxes

Of course, I never found out why it didn't work. Only the information that it works on your server didn't help me!

Yes, I insert it in Admintools for the htaccess maker, but the same problem

that was the first thing I did, it's not that

I have install it on a fresh Joomla, only install Jux Social Media with Breez3 Stzandard Template.

The same Error:
The URL mentioned is not blocked on the server side. It also comes up when the .htaccess file is renamed as a test http://test2020/modules/mod_jux_social_media/social/social.php to an error 500. Here is the error in the error log:

PHP Fatal error: Cannot declare class OAuthException, because the name is already in use in /www/htdocs/test/test2020/modules/mod_jux_social_media/social/social.php on line 875, referer: test2020/unternehmen/social-stream

Hi, here the Side Infos