Ionic Pro Build Fails without error message

We’re having trouble building our app on Ionic Pro. We had a version that built in the past but now the build fails without an actual error log. The text below is the entire log from Ionic Pro when it tries to build the app. The app builds on my local machine without any problems but it won’t get past here on Ionic Pro. Please could I get some advice on where to look for the problem, or how to log out more information. Thanks.

Running with gitlab-ci-multi-runner 9.1.0 (0118d89)
  on ip-10-2-78-129 (c9648220)
Using Shell executor...
Running on ip-10-2-78-129...
Cloning repository...
Cloning into '/home/gitlab-runner/builds/c9648220/0/project-0'...