How can I fix Heroku Application Error caused by configuration property? - mongodb
I have a small project that used to work on Heroku. However, after some minor changes, I get an Application Error.
When I type npm start on the Heroku console, it gives me the following error
/app/node_modules/config/lib/config.js:182
throw new Error('Configuration property "' + property + '" is not defined');
^Error: Configuration property "mongoURI" is not defined
at Config.get (/app/node_modules/config/lib/config.js:182:11)
at Object.<anonymous> (/app/server.js:12:19)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)
I have tried to add config vars manually on Heroku but didn't help. I am not sure what's not working because everything is fine when I run it on the localhost, and I have not changed anything on the server-side. Is there any solution for this?
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