The problem is repeated, sometimes give a blank page or 500 internal server error or appear like in the screenshots.
Also when I try for example to save any change it gives me an internal server error message or keep loading forever, an example shown in the screenshots
While trying to edit the theme options:
https://paste.pics/CAVSL
While trying to delete the plugin:
https://paste.pics/CAUJX
While trying to export orders:
https://paste.pics/CAVXV