ThemeREX Addons backend error

Hi there, I’m getting the following error on my site every time I activate a plugin:

Warning: preg_match(): Compilation failed: invalid range in character class at offset 6 in /home/customer/www/ on line 126

Warning: Cannot modify header information - headers already sent by (output started at /home/customer/www/ in /home/customer/www/ on line 6221

Has anyone had anything similar … or knows what it means/how to fix it?


Contact with your purchase item author hope they will helped!