devise_token_auth: NoMethodError (undefined method `[]' for nil:NilClass):

I have this error for a couple of day now. Any leads to solve ti ?

NoMethodError (undefined method `[]' for nil:NilClass):
  devise_token_auth (0.1.32.beta10) app/models/devise_token_auth/concerns/user.rb:180:in `build_auth_header'
  devise_token_auth (0.1.32.beta10) app/controllers/devise_token_auth/concerns/set_user_by_token.rb:68:in `update_auth_header'

About this issue

Original URL
State: closed
Created 9 years ago
Comments: 19 (1 by maintainers)

Commits related to this issue

create token when no client_id token fix #286. Case of no change headers on each request. — committed to StratusPrint/devise_token_auth by charlesdg 8 years ago

Most upvoted comments

Seeing this error when doing a password reset password change. I believe it might be all old tokens being wiped out with the PW update, but no new token existing yet, but haven’t been able to dig into internals enough to confirm.

arfrank on Feb 24, 2016

This seems to be caused by a threadsafety issue in how tokens are being set for a resource (user). If two requests come in simultaneously (e.g. a client sends duplicate sessions create requests) on a multi-threaded server the second token update will overwrite the first, so when build_auth_headerruns and looks for the token with the first client_id it will return nil and throw this error.

hiattp on Sep 27, 2015