Fatal error: Uncaught Error: Call to undefined function get_header() in /home/klient.dhosting.pl/agroinstal/agroinstal.pl/public_html/wp-content/themes/agroinstal/index.php:3
Stack trace:
#0 {main}
thrown in /home/klient.dhosting.pl/agroinstal/agroinstal.pl/public_html/wp-content/themes/agroinstal/index.php on line 3