Notice: Undefined variable: cart in /home/testcom/domains/nadodatek.pl/public_html/create_account_pwa.php on line 27

Fatal error: Uncaught Error: Call to a member function count_contents() on null in /home/testcom/domains/nadodatek.pl/public_html/create_account_pwa.php:27
Stack trace:
#0 {main}
  thrown in /home/testcom/domains/nadodatek.pl/public_html/create_account_pwa.php on line 27