Possible null reference return.

Possible null reference argument for parameter 'graph' in 'void BinaryFormatter.Serialize(Stream serializationStream, object graph)'.

Possible null reference argument for parameter 'buffer' in 'MemoryStream.MemoryStream(byte[] buffer, int index, int count)'.

Possible null reference return.

Dereference of a possibly null reference.

Converting null literal or possible null value to non-nullable type.

Field 'RabbitMqProducer._rabbitMqConnection' is never assigned to, and will always have its default value null

Argument of type 'IDictionary<string, object>' cannot be used for parameter 'arguments' of type 'IDictionary<string, object?>' in 'Task<QueueDeclareOk> IChannel.QueueDeclareAsync(string queue, bool durable, bool exclusive, bool autoDelete, IDictionary<string, object?>? arguments = null, bool passive = false, bool noWait = false, CancellationToken cancellationToken = default(CancellationToken))' due to differences in the nullability of reference types.

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.