Connection problems with my MySql and Ignition

Hello, I am having connection problems with my MySql and Ignition.

For more information:

STATUS
Cannot create PoolableConnectionFactory (Unknown initial character set index ‘255’ received from server. Initial client character set can be forced via the ‘characterEncoding’ property.)

How resolve this problem ?

I await your reply.

Cross-posting is frowned upon. Please keep it within the same topic.