This page isn’t working // I think it's my .env? Been struggling for hours to solve this with no solution and I'm under a deadline for a client. Any help would be so amazing. 

Here's what happened: 


I set up the initial craft project with craft create 
This got pushed to Github and other devs have been continuing work
We were collaborating just fine on the project back and fourth with changes. 
In my development I somehow deleted my .env file. 
Now - I can't get my /admin/dashboard to show up or the craft site at all. 
I've been playing with the settings in the .env I've been going back and fourth with the /phpMyAdmin/?lang=en page trying to set up and link a database. 
It seems: the project is fine, the database is fine, but I can't seem to link my database and the craft project and get craft to run at all. 


Any tips? Any direction? I am just seeing this in the browser: 

This page isn’t working localhost is currently unable to handle this request.
HTTP ERROR 500


Help please! Thanks. 

FYI - I am on MacOS running MAMP (From my applications folder) and I have PHP 7.2.11 all installed and running. 

Thanks!
Yes, the .env file holds the environmental-specific settings/"secrets" that Craft needs to run. So you'll need to recreate it; here's a template:

https://github.com/craftcms/craft/blob/master/.env.example

More information can be found here: Environmental Configuration