Warning: Undefined array key "search_results" in /customers/9/2/0/regioindekijker.be/httpd.www/fotodetail.php on line 41

Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /customers/9/2/0/regioindekijker.be/httpd.www/fotodetail.php:54
Stack trace:
#0 /customers/9/2/0/regioindekijker.be/httpd.www/fotodetail.php(54): array_column(NULL, 'ID')
#1 {main}
  thrown in /customers/9/2/0/regioindekijker.be/httpd.www/fotodetail.php on line 54