How do I troubleshoot issues with dotenv in my Node.js application?

I'm having trouble loading my environment variables with dotenv. What should I check?

First, ensure that you have installed the dotenv package correctly. You can do this by running npm install dotenv.

I installed it, but my variables still aren't loading. What else could be wrong?

Check if you have a .env file in the root of your project. Also, make sure you're calling require('dotenv').config() at the top of your main file.

I have the .env file and the config call, but it's still not working. Any other tips?

Verify that your .env file is formatted correctly. Each line should be in the format KEY=VALUE without spaces around the equals sign.