MAMP White Screen

Hi

I have uploaded a work in progress version of a WP to a sub domain, changed the config etc to point to the online database and all is fine, online.

I have just gone back into the local config file and put the settings back to the local database to carry on working and I’m getting a white screen.

I have done this on a few other WP sites and it works OK. Not sure what I’ve done wrong here…?

Thanks
Wayne