Fatal error: Uncaught Error: Call to a member function get_results() on null in /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-content/themes/_naturforum/inc/cpt.php:1963
Stack trace:
#0 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-content/themes/_naturforum/inc/cpt.php(1980): create_sitemap()
#1 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-content/themes/_naturforum/functions.php(503): require_once('/home/httpd/vho...')
#2 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-settings.php(585): include('/home/httpd/vho...')
#3 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-config.php(85): require_once('/home/httpd/vho...')
#4 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-load.php(50): require_once('/home/httpd/vho...')
#5 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#6 /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/index.php(17): require('/home/httpd/vho...')
#7 {main}
  thrown in /home/httpd/vhosts/naturforum-regiobasel.ch/dev.naturforum-regiobasel.ch/htdocs/wp-content/themes/_naturforum/inc/cpt.php on line 1963