Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method bbp_5o1_toolbar::script_and_style() cannot be called statically in /var/www/web22396332/html/keinwietpas.de/wp-includes/class-wp-hook.php:288 Stack trace: #0 /var/www/web22396332/html/keinwietpas.de/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #1 /var/www/web22396332/html/keinwietpas.de/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #2 /var/www/web22396332/html/keinwietpas.de/wp-content/plugins/bbpress/includes/core/sub-actions.php(114): do_action('bbp_init') #3 /var/www/web22396332/html/keinwietpas.de/wp-includes/class-wp-hook.php(288): bbp_init('') #4 /var/www/web22396332/html/keinwietpas.de/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #5 /var/www/web22396332/html/keinwietpas.de/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #6 /var/www/web22396332/html/keinwietpas.de/wp-settings.php(523): do_action('init') #7 /var/www/web22396332/html/keinwietpas.de/wp-config.php(86): require_once('/var/www/web223...') #8 /var/www/web22396332/html/keinwietpas.de/wp-load.php(37): require_once('/var/www/web223...') #9 /var/www/web22396332/html/keinwietpas.de/wp-login.php(12): require('/var/www/web223...') #10 {main} thrown in /var/www/web22396332/html/keinwietpas.de/wp-includes/class-wp-hook.php on line 288