ActionController :: InvalidAuthenticityToken error resolution

While learning Rails, when I tried to log in from logout, I got an error like the title.

What I did to solve it

First, change the logout action of users_controller.rb as follows.
def logout
  session[:user_id] = nil
  flash[:notice] = "logged out" 
 redirect_to("/login") 
end

Changes

It was fixed by adding flash and changing the redirect destination to/login.

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