What behaviour is observed:

Getting a casting error from timestamp to long when using specific server jar.

Steps/models to reproduce:

Download 1.16.5 (likely other versions as well) Purpur. https://github.com/pl3xgaming/Purpur (Was using build 1171)
Config AuthMe to use MySQL.
Run the server.

Plugin list:

No plugins except AuthMe.

Environment description

Standalone server.

AuthMe build number:

5.6.0-beta2

Error Log:

[23:14:30 WARN]: [AuthMe] Error during SQL operation: [SQLDataException]: Unsupported conversion from TIMESTAMP to java.lang.Long

Cool support.