Fatal error: Uncaught TypeError: sqlsrv_query(): Argument #1 ($conn) must be of type resource, null given in C:\xampp\htdocs\rainet\php\clases\sqlsrv.class.php:42 Stack trace: #0 C:\xampp\htdocs\rainet\php\clases\sqlsrv.class.php(42): sqlsrv_query(NULL, 'EXEC pag_AdminL...', Array) #1 C:\xampp\htdocs\rainet\php\clases\sqlsrv.class.php(62): sqlsrv->consulta('EXEC pag_AdminL...', Array) #2 C:\xampp\htdocs\rainet\php\clases\cpagina.php(28): sqlsrv->registros_all('EXEC pag_AdminL...', Array) #3 C:\xampp\htdocs\2020\Primaria\index.php(8): cpagina->pag_AdminListar_ProximosEventos('Primaria') #4 {main} thrown in C:\xampp\htdocs\rainet\php\clases\sqlsrv.class.php on line 42