I keep getting error message

I am getting the same errors. I cannot access my admin panel and its driving me insane.

Ok,

I am not getting this error here, but when this error occurs, it is because there is whitespaces at the ending or begining of the file mentioned … function.php.

Open this file and remove/delete the whitespaces at very end of ?> (line 891) and tell me if it works ??

It was the actual theme, it was missing a style sheet causing the error.

Is it solved, then?

yes it is

Ok, marked as solved.

Feel free to let me a review https://www.ads-software.com/support/view/theme-reviews/lupercalia