I have created a new app on Heroku on Windows XP, accessed the created URL, it displayed the welcome page, then I deployed Rails app data to Heroku, then accessed the same URL again, but I found it displayed an error page with an “application error”. I have no idea, the Rails app is open source, I downloaded it from the internet, I have done nothing to it except overwriting the document’s name.
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heroku logsto see what the problem is.