@T3Gunner Ah, I suspected as much. This is not a support forum for Lychee - it's for the Lychee package of Cloudron.
I wish I could help you out anyway but that seems unlikely because the question you asked is very much dependent on how the app is installed by the control panel. So you have to ask your question either in the Lychee project on GitHub or cPanel forums.
Thanks for your help @girish, I'll just create a gallery using PIWIGO