Hello Lisa, thank you so much for your reply.
I have removed the old BackupBuddy version.
As per your suggestion, I’ve just disabled all the plugins from the website, but the issue still remains (I’ve cloned the website on a test sub-domain site to do some troubleshooting, but it was an exact copy).
https://www.dropbox.com/s/rmdr8xfxiyc8cea/Screenshot%202018-01-02%2016.16.42.png?dl=0
