As I think your mysql is not configured yet you should try to run ser with the default
ser.cfg, that comes with no mysql support, and also with some other commented lines
support, if that works, your ser is normal and you must have changed something wrong in
the configuration. Try to take it back to the original ser.cfg.
If that doesn't work, I'm sending you a very basic ser.cfg configuration with
mysql support (if you have already installed and configured that) for you to try.
Best Regards
Felipe Martins