Fatal error: Uncaught Error: Call to undefined function create_function() in /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-content/plugins/display-categories-widget/display_categories_widget.php:277
Stack trace:
#0 /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-settings.php(305): include_once()
#1 /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-config.php(89): require_once('/usr/home/Energ...')
#2 /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-load.php(37): require_once('/usr/home/Energ...')
#3 /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-blog-header.php(13): require_once('/usr/home/Energ...')
#4 /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/index.php(17): require('/usr/home/Energ...')
#5 {main}
  thrown in /usr/home/EnergyNAT/domains/dev.energynat.pl/public_html/wp-content/plugins/display-categories-widget/display_categories_widget.php on line 277