Triggering initial build fails #181

Expected Behavior

Build should complete

Actual Behavior

--- Step 14: Triggering Initial Builds ---
🤔 Would you like to trigger the initial builds for the frontend and backend now? (y/n)
y
➡️ Triggering backend build...
ERROR: (gcloud.builds.triggers.run) INVALID_ARGUMENT: source.revision must be specified to run this trigger

Steps to Reproduce the Problem

1. Deploy following the wizard