this is my error stack :
> TypeError (no implicit conversion of nil into String):
>
> activesupport (5.0.0.1) lib/active_support/security_utils.rb:23:in `digest'
lib/action_controller/metal/http_authentication.rb:71:in `block in
> http_basic_authenticate_with'
and here is my code:
http_basic_authenticate_with username: "xxx01", password: "123456"
when i comment the code ,it works, i don't know why this error occured,how to fix it
it works when i first enter the page, but when i input the username and password the error occurred.