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Problem with connector / entityframework

Im creating a litle app using visual studio 2022, net 6 and mariadb, for study purposes, and i have a problem with mariadb where i receive a message that Object cannot to be cast to DBNull to other types. The problem appear to be this one related here

https://stackoverflow.com/questions/74060289/mysqlconnection-open-system-invalidcastexception-object-cannot-be-cast-from-d

as i have testes with an older version of mariadb, prior to 10.10, and it works well. But i cannot solve it anyway and i cant use a previous version of db. I started my db in Mysql 8 and it worked as well, but where i planning to publish my app does install only a newer version of mariadb.

Does anyone once have this problem? Any suggestion what i can do?

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