Duplicator forbidden or internal server error

Hi.

I’ve got an issue with one of my sites when trying to move via duplicator.

The server I’m attempting to move it to has had multiple successes with other sites using duplicator (even an early version of the problematic site).

When first running I get a 403 Forbidden and if I change the permissions to 777 and re-run I get an internal server error 500 and the installation-log is empty.

I’ve even tried a quick test of another duplicator build in the same directory and that one works, so I’m not sure why I’m having problems with this build. Also tried updating Duplicator and re-building with no joy.

Not sure what to try next, has anyone got any ideas?

Thanks