Warning: Undefined array key "wp-path" in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/frontend.php on line 13

Fatal error: Uncaught TypeError: qtranxf_parse_page_config(): Argument #2 ($url_path) must be of type string, null given, called in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/frontend.php on line 25 and defined in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/utils.php:317
Stack trace:
#0 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/frontend.php(25): qtranxf_parse_page_config(Array, NULL, 'format=xml&url=...')
#1 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/frontend.php(898): qtranxf_get_front_page_config()
#2 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/init.php(126): qtranxf_add_front_filters()
#3 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-includes/class-wp-hook.php(324): qtranxf_init_language('')
#4 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#5 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#6 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-settings.php(555): do_action('plugins_loaded')
#7 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-config.php(89): require_once('/home/httpd/vho...')
#8 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-load.php(50): require_once('/home/httpd/vho...')
#9 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#10 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/index.php(17): require('/home/httpd/vho...')
#11 {main}
  thrown in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/utils.php on line 317