erro to sigin about token-based-auth-backend HOT 5 OPEN

Seeing this also

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Update package.json (dependencies version are too old), run npm install and backend will work. (just figured it out)

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i cloned this proj,but not work when i use npm server.js,the error is Error: failed to connect to [undefined:27017],how can i fix it?

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update mongoose

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@clownvary
To solve the "error is Error: failed to connect to [undefined:27017]", needs to pass the valid path URL of mongo database. In another case, you can replace it with the localy installed mongo database. Replace the mongoose connection URL with:
mongoose.connect('mongodb://localhost/databasename');
It work for me.

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