The subject line pretty much says it all. Anytime someone clicks on the softaculous icon using the x3 theme, it gives a 404 error using the following url:
It seems that for some reason Softaculous could not create the Symbolic link. Can you please try to reinstall Softaculous.
If you still face the issue please open a support ticket with the root details of the server we will check the issue and resolve it.
https://www.softaculous.com/support