Build Failed /opt/render/project/src/config/environment.rb:5:in `<main>'


I’m trying to deploy my application following the “4.Deploy to Render” documentation. But it is showing this error.

Previously the application was on Heroku.


This is the contento on my environment.rb:

# Load the Rails application.
require_relative "application"

# Initialize the Rails application.

The thrown error looks to be due to ActiveSupport::MessageEncryptor::InvalidMessage.

Other community members have encountered this error in the past. You might find some insight from those posts.

And a longer thread from a GitHub Issue on the Rails repo (possibly an older version, but looks like it may contain guidance that’s still relevant):

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