An error occurs when MySQLDriverCS is used to access the Mysql database to access the Date Field.

Here I access the cdb_members table of the discuz database. The SQL is as follows:
# Set ($ SQL = "SELECT * FROM 'cdb _ members 'order by credits LIMIT 0, 30 ")
The error message is as follows:
The DateTime represented by the string is not supported in calendar System. Globalization. GregorianCalendar.
I guess it should be related to the date field, and then change select * to select username,
# Set ($ SQL = "SELECT username, email, credits FROM 'cdb _ members 'order by credits LIMIT 0, 30 ")
The result is correct, but why?

Thank you for your help!