Fatal error: Call to undefined function

[karlc]

Hi, I am not certain if you can help me, I am getting this error on wrodpress website
Fatal error: Call to undefined function us_get_main_theme_version() in /home/scotlandlandsc/public_html/wp-content/themes/Impreza/header.php on line 74

http://www.landscapecompanyscotland.co.uk/

I have tried deleting the theme form file manager, the error code goes but site still down, this usually fixes this kind of issue?

Thankyou in advance

[jcbones]

That is not a native wordpress function (that I can find anyway). It isn’t listed in the wordpress function library. You are going to have to dig into the code and find where the code is trying to get custom functions from (should be an included file), then finding out if that page is run.

Perhaps by making that file “required”.