Did you follow the steps in "How to Install" and "Troubleshooting" but still have problems? And your webhost support could not help you either? Ask here.
Dear @ema-studio
it looks like a plugin is causing that error:
0_1528153142192_Bildschirmfoto 2018-06-05 um 00.58.04.png
(Click on the picture to have a closer look)
Can you deactivate all plugins and see if the problem remains?
Dear @Janejun96
I have a feeling that the problem might be connected to your Webhost.
Can you try to install LayTheme on a local computer first?
Have a look at the application MAMP. It is for free and lets you run Wordpress on your computer.
Best!
Marius
Before you post:
When using a WordPress Cache plugin, disable it or clear your cache.
Update Lay Theme and all Lay Theme Addons
Disable all Plugins
Go to Lay Options → Custom CSS & HTML, click "Turn Off All Custom Code", click "Save Changes"
This often solves issues you might run into
When you post:
Post a link to where the problem is
Does the problem happen on Chrome, Firefox, Safari or iPhone or Android?
If the problem is difficult to explain, post screenshots / link to a video to explain it