Are parameters added to the link 2 times?

Question

Ruby on Rails

/users/confirmation?confirmation_token=1xzpUTshC9PRPpdi22qX?confirmation_token=1xzpUTshC9PRPpdi22qX
As you can see, twice ?confirmation_token=1xzpUTshC9PRPpdi22qX
So in several places throughout the project.
What could be the problem, until now I solved it by compiling exact routes, until I ran into the Devise method.
Perhaps additional code or something is needed?