Please help, no idea..

[MahdyE23]

I have no idea why this always keeps happening with EVERY theme I install.

http://prntscr.com/2s4vgx

How can I fix this error so people will be able to see the themes? It won't do this on the default theme, but every other theme I will install.

[ForceHSS]

link to site needed to see what the bug is

[Seven Skins]

This might help if your themes are outdated: https://vborg.vbsupport.ru/showthread.php?t=301925