Please remove whatever you’re using to block right clicks. It makes it too difficult to debug your site with that in place.
It looks like your page is dying before finishing.
Errors like this are logged. Check the error log on your server. If you can’t find the log, please contact your host.
Meantime, enable wp_debug and wp_debug_log and after an error, look at wp-content/debug.log to see if anything gets logged there. https://codex.ww.wp.xz.cn/Debugging_in_WordPress
You can also try this: Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.
If you can install plugins, install “Health Check”: https://ww.wp.xz.cn/plugins/health-check/ On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site. You can then use its admin bar menu to turn on/off plugins and themes one at a time.
See http://www.wpbeginner.com/plugins/how-to-deactivate-all-plugins-when-not-able-to-access-wp-admin/
Thread Starter
emek55
(@emek55)
Thank you for your help.
I activated the theme Twenty, with that the menu can be open, the site isn’t anymore empty. But if I change back to my theme, is it again empty.
I enabled the wp_debug and got many codes in debug.log
If the errors relate to your original theme, please contact its developers.
You’re using a commercial theme, so please use their official support channel. We feel they are best equipped to support their products.
https://themeforest.net/item/artemis-multipurpose-woocommerce-wordpress-theme/19750304/support
Commercial products are not supported in these forums. .