Warning: pg_connect(): Unable to connect to PostgreSQL server: could not connect to server: Connection refused Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432? in /var/www/html/sigsem/modelo/clase_conexion.php on line 16

Warning: pg_last_error(): No PostgreSQL link opened yet in /var/www/html/sigsem/modelo/clase_conexion.php on line 16
No se ha podido conectar;