Recent Upgrade, Now Re-launch server issue?

The start app command did get my site back running last night for now. But that’s just a band-aid, right? Since it isn’t rebuilding the site? I’m using everything that I used before. The only difference in plugins I added were the post reactions one and the Newsletter one. But I tried removing them one at a time and then both but the site still wouldn’t launch. And there’s no whitespace or anything in the app.yml file.