The MySQL client library currently supports performing an automatic reconnection to the server if it finds that the connection is down and an application attempts to send a statement to the server to ...

Which exact Umbraco version are you using? For example: 9.0.1 - don't just write v9 7.15.3 to 8.17.1 Bug summary I am trying to upgrade the database of version 7.15.3 to version 8, I tried versions ...