Warning: Undefined array key "wp-path" in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/language_detect.php on line 329

Fatal error: Uncaught TypeError: qtranxf_language_neutral_path(): Argument #1 ($path) must be of type string, null given, called in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/language_detect.php on line 329 and defined in /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/url.php:278
Stack trace:
#0 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/language_detect.php(329): qtranxf_language_neutral_path(NULL)
#1 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/language_detect.php(82): qtranxf_detect_language_front(Array)
#2 /home/httpd/vhosts/korbundstuhl.ch/httpdocs/wp/wp-content/plugins/qtranslate-xt/src/init.php(82): qtranxf_detect_language(Array)
#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(559): 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/url.php on line 278