Cant edit videos

Hi, thanks for putting out this plugin.

I have got it to install successfully in my project https://soloworldtour.com/world-tour-video/

However, when I attempt to edit the videos in the settings page it takes me to an error 404 page not found on my site after I click save.

Sorry new the newbie question but I cant resolve this issue.

https://www.ads-software.com/extend/plugins/ultimate-gallery/