Fatal error: Uncaught Error: Class 'WC_Log_Levels' not found in /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-logger.php:251
Stack trace:
#0 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/src/Utilities/FeaturesUtil.php(62): WC_Logger->error('FeaturesUtil::d...')
#1 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/facebook-for-woocommerce/facebook-for-woocommerce.php(37): Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('custom_order_ta...', 'facebook-for-wo...', true)
#2 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-includes/class-wp-hook.php(324): {closure}('')
#3 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#4 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-woocommerce.php(772): do_action('before_woocomme...') in /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-logger.php on line 251

Fatal error: Uncaught Error: Class 'WC_Log_Levels' not found in /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-logger.php:236
Stack trace:
#0 /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-woocommerce.php(350): WC_Logger->critical('Uncaught Error:...', Array)
#1 [internal function]: WooCommerce->log_errors()
#2 {main}
  thrown in /home/httpd/vhosts/bielersport.ch/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-logger.php on line 236