I attempted to set up Grav on MAMP and have been seeing a DBALException error. Any idea why this is? Screen Shot 2016-04-12 at 12
It seems you are pointing to some Syfmony based project, that is trying to make a db query. That’s not Grav 
Grav is a flat file system and has no database at all, looking through the stacktrace in your screenshot, none of those calls looks familiar, but do remind me of Symfony.
My advice is to check your vhost setup.
Yeah, that’s what I was afraid of. This is just MAMP pro so I’m not sure what could have gotten messed up but I’ll dig deeper.
Thanks!