Warning: Undefined variable $fraga in /customers/1/8/f/microbirding.se/httpd.www/app/core/lista.php on line 121

Fatal error: Uncaught ValueError: PDO::prepare(): Argument #1 ($query) cannot be empty in /customers/1/8/f/microbirding.se/httpd.www/app/core/Model.php:21
Stack trace:
#0 /customers/1/8/f/microbirding.se/httpd.www/app/core/Model.php(21): PDO->prepare('')
#1 /customers/1/8/f/microbirding.se/httpd.www/app/core/lista.php(121): Model->get_col(NULL)
#2 /customers/1/8/f/microbirding.se/httpd.www/app/core/App.php(46): lista->alla()
#3 /customers/1/8/f/microbirding.se/httpd.www/index.php(4): App->__construct()
#4 {main}
  thrown in /customers/1/8/f/microbirding.se/httpd.www/app/core/Model.php on line 21