White screen while Publishing Lenses
if you get white screen of error with a message AUTHENTICATION ERROR or UNAUTHORISED , then this is for you.
in my case i was unable to publish my lenses and after searching a lot i found a solution of clearing enteries of SNAP INC in CREDENTIAL MANAGER.
if you are facing the same problem then visit this page - https://support.lensstudio.snapchat.com/hc/en-us/articles/360033433732-Why-am-I-receiving-a-blank-white-screen-when-I-submit-my-Lens-or-check-My-Lenses-
in the above page you get a permanant solution of this problem.