Warning: file(https://www.spangshus.dk/polen/tpl/header.tpl): Failed to open stream: HTTP request failed! in /customers/b/c/8/spangshus.dk/httpd.www/polen/_func.php on line 38

Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, bool given in /customers/b/c/8/spangshus.dk/httpd.www/polen/_func.php:38
Stack trace:
#0 /customers/b/c/8/spangshus.dk/httpd.www/polen/_func.php(38): implode('', false)
#1 /customers/b/c/8/spangshus.dk/httpd.www/polen/index.php(846): gettemplate('header')
#2 {main}
  thrown in /customers/b/c/8/spangshus.dk/httpd.www/polen/_func.php on line 38