how to resolve this？

[dachengzao]

how to resolve this？Authentication failed.

[marianiku]

Our group had the same issue: login gives bad request 400 error (and registration internal server error 500). In our case it was caused by module 'meanio' updating from 0.8.82 to 0.8.83. Returning to 0.8.82 fixed authentication again.

[dachengzao]

are you reslove?

[jwebbdev]

@xiaoyang2022 Can you give some more information? What route are you attempting to hit when you get Authenication failed. Where are you seeing the error (on the page, in the browser console, in the server std output?)

Also which version of mean are you using? (check package.json in your mean root).