[RAILS] Error memorandum

A story that an error occurred when trying to deploy with heorku.

ver. 'rails', '~> 6.0.0'

When I tried to deploy the created app, I got an Appliation error. errorimage


After a lot of research, I found that the master.key file, which should be paired with the credentials.yml.enc file, did not exist in VScode.

Therefore, once I quit VScode and restarted, the master.key file appeared successfully, so I was able to resolve the error!

Before deploying, I would like to check once if the necessary files exist so that such an error does not occur again.

Precautions when investigating and executing

It's okay to type commands as per the article, but I don't recommend doing rails new as per the article! is what they said.

Certainly, it is a command to create a new application template, so if you try rails new once again, it will look like Matryoshka. I'll be careful.

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