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