MongooseError – Operation `users.findOne()` buffering timed out after 10000ms

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In my experience this happens when your database is not connected, Try checking out following things –

  • Is you database connected and you are pointing to the same url from your code.
  • check if your mongoose.connect(...) code is loading.

I faced this issue where I was running the node index.js from my terminal and mongoose connect code was into different file. After requiring that mongoose code in index.js it was working again.

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