Full exception and stack trace

 This method may not be called when another read operation is pending.
   at System.Net.Security.SslStream.ReadAsyncInternal[TIOAdapter](Memory`1 buffer, CancellationToken cancellationToken)
   at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
   at MySqlConnector.Protocol.Serialization.StreamByteHandler.<ReadBytesAsync>g__DoReadBytesAsync|6_2(Memory`1 buffer) in /_/src/MySqlConnector/Protocol/Serialization/StreamByteHandler.cs:line 67
   at MySqlConnector.Protocol.Serialization.BufferedByteReader.ReadBytesAsync(IByteHandler byteHandler, ArraySegment`1 buffer, Int32 totalBytesToRead, IOBehavior ioBehavior) in /_/src/MySqlConnector/Protocol/Serialization/BufferedByteReader.cs:line 34
   at MySqlConnector.Protocol.Serialization.ProtocolUtility.ReadPayloadAsync(BufferedByteReader bufferedByteReader, IByteHandler byteHandler, Func`1 getNextSequenceNumber, ArraySegmentHolder`1 previousPayloads, ProtocolErrorBehavior protocolErrorBehavior, IOBehavior ioBehavior) in /_/src/MySqlConnector/Protocol/Serialization/ProtocolUtility.cs:line 420
   at MySqlConnector.Core.ServerSession.ReceiveReplyAsync(IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 1070
   at MySqlConnector.Core.ServerSession.TryPingAsync(Boolean logInfo, IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 1022
   at MySqlConnector.MySqlConnection.PingAsync(IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySqlConnection.cs:line 511
   at MainForm.TryOpenConnectionAsync(MySqlConnection connection, Int32 timeoutSeconds)