Vesta Control Panel - Forum

Hi everyone, I'm new to the forum, I recently took a vps and I had a great time with this cp, I have this problem, I would like to start developing in moodle, I installed it with many difficulties and in the end I found that the problem it lies precisely in not having the Slash arguments function active, I spent several days on the web without finding an effective solution, can you help me?
I installed debian10 and the latest version of vestacp without changing the original configuration, so I have apache as a webserver and nginx as a reverse.

thank you so much