Fatal error: Uncaught Error: Function name must be a string in /kunden/257891_53639/dourobike/dourobike-wp/wp-content/themes/propulsion/framework/php/class-style-generator.php:123 Stack trace: #0 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/class-wp-hook.php(286): avia_style_generator->create_styles('') #1 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/general-template.php(2614): do_action('wp_head') #4 /kunden/257891_53639/dourobike/dourobike-wp/wp-content/themes/propulsion/header.php(86): wp_head() #5 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/template.php(688): require_once('/kunden/257891_...') #6 /kunden/257891_53639/dourobike/dourobike-wp/wp-includes/template.php(647): load_template('/kunden/257891_...', true) #7 /kunden/257891_53639/dourobike/dourobike-wp/wp-include in /kunden/257891_53639/dourobike/dourobike-wp/wp-content/themes/propulsion/framework/php/class-style-generator.php on line 123