Npgsql.NpgsqlException (0x80004005): Unable to connect to a suitable host. Check inner exception for more details.
 ---> System.AggregateException: One or more errors occurred. (A task was canceled.) (A task was canceled.)
 ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
   at Npgsql.Internal.NpgsqlConnector.ConnectAsync(NpgsqlTimeout timeout, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.RawOpen(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.<Open>g__OpenCore|209_0(NpgsqlConnector conn, String username, SslMode sslMode, GssEncryptionMode gssEncMode, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.Open(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.PoolingDataSource.OpenNewConnector(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlMultiHostDataSource.TryGetIdleOrNew(NpgsqlConnection conn, TimeSpan timeoutPerHost, Boolean async, TargetSessionAttributes preferredType, Func`3 stateValidator, Int32 poolIndex, IList`1 exceptions, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
 ---> (Inner Exception #1) System.Threading.Tasks.TaskCanceledException: A task was canceled.
   at Npgsql.Internal.NpgsqlConnector.ConnectAsync(NpgsqlTimeout timeout, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.RawOpen(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.<Open>g__OpenCore|209_0(NpgsqlConnector conn, String username, SslMode sslMode, GssEncryptionMode gssEncMode, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.Internal.NpgsqlConnector.Open(NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.PoolingDataSource.OpenNewConnector(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.PoolingDataSource.<Get>g__RentAsync|33_0(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlMultiHostDataSource.TryGet(NpgsqlConnection conn, TimeSpan timeoutPerHost, Boolean async, TargetSessionAttributes preferredType, Func`3 stateValidator, Int32 poolIndex, IList`1 exceptions, CancellationToken cancellationToken)<---

   at Npgsql.NpgsqlMultiHostDataSource.Get(NpgsqlConnection conn, NpgsqlTimeout timeout, Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlConnection.<Open>g__OpenAsync|42_0(Boolean async, CancellationToken cancellationToken)