Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, bool given in /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-content/plugins/3d-flip-book/index.php:63 Stack trace: #0 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-content/plugins/3d-flip-book/index.php(63): array_merge(Array, false) #1 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-content/plugins/3d-flip-book/index.php(82): iberezansky\fb3d\fetch_options() #2 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-includes/class-wp-hook.php(324): iberezansky\fb3d\init('') #3 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #4 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-settings.php(555): do_action('plugins_loaded') #6 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-config.php(99): require_once('/var/www/vhosts...') #7 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-load.php(50): require_once('/var/www/vhosts...') #8 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-blog-header.php(13): require_once('/var/www/vhosts...') #9 /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/index.php(17): require('/var/www/vhosts...') #10 {main} thrown in /var/www/vhosts/hosting149688.a2ec7.netcup.net/httpdocs/h2-national-summit.de/wp-content/plugins/3d-flip-book/index.php on line 63