Fatal error: Uncaught TypeError: pg_query(): Argument #1 ($connection) must be of type PgSql\Connection, null given in /home/kardexup/public_html/modelo/conexion.php:36 Stack trace: #0 /home/kardexup/public_html/modelo/conexion.php(36): pg_query(NULL, 'select * from v...') #1 /home/kardexup/public_html/preinscripcion.php(7): conexion->Consulta('select * from v...') #2 {main} thrown in /home/kardexup/public_html/modelo/conexion.php on line 36