Thank you for your information.
We checked the code in detail via cPanel. But this problem is not really related with our theme.
We deactivate lorada theme and activated the other themes via cPanel.
But error didn't remove. All errors are in wp-admin folder.
But theme & plugins are all in wp-content folder, and front-end is not broken. Only admin dashboard is borken.
We think this problem is caused by wordpress admin core issue.
Did you install the wordpress via your hosting server? if so, it would be better to contact your hosting server provider.
This admin error is not related with the theme & plugins. So it is hard to find the solution.
We can support for theme problems.
If you contact your hosting server, you can find the solution.
In fact, we have got this problem in 7 months ago. At that time, we have re-installed the wordpress.
If you have any other questions, please let us know again.
Best Regards, C-Themes