I installed an update to XCode and subsequently found I could not connect to git repositories on Springloops using Tower on macOS Sierra (that’s a nice pile of software). I was getting Authentication errors in Tower when trying to reach the repository. After trying a bunch of things to reconnect and getting rather frustrated by the whole thing I finally found that I need to agree to the XCode license again in order to use git.
To do so open up Terminal and type:
sudo xcodebuild -license
Then hit space a bunch to get to the bottom of the license. Once you do you’ll be prompted to type the word agree.
Once you do that quit Tower and start it back up and you should be able to reconnect again.