Fatal error: Uncaught Error: Call to undefined function add_theme_support() in /home/wmichal67/public_html/lekcjatest-1v-mw/wp-content/themes/sydney/inc/page-builder.php:10
Stack trace:
#0 {main}
thrown in /home/wmichal67/public_html/lekcjatest-1v-mw/wp-content/themes/sydney/inc/page-builder.php on line 10