“我们很抱歉，但事情出了差错。”数据库迁移(Heroku, Git Bash)

Hi everyone in this forum! :) I'm new here, so forgive for the mistakes I made or the noobish questions I may ask. I'm also new to programming too, so please be patient :) I learn Ruby on Rails, and try to get my app running on the web with Heroku. But no matter how hard I try, I can't get it to work properly. Hi everyone in this forum! :) I'm new here, so