Incorrectly defined user_class on Ruby 3.0.6, Rails 6.1

[legacy370]

Configuration

• Sorcery Version: 0.15.0
• Ruby Version: 3.0.6
• Framework: Rails 6.1
• Platform: Ubuntu

Expected Behavior

Access http://localhost:3000/
Enter email and password
Successful login

Actual Behavior

ArgumentError in SessionsController#create
You have incorrectly defined user_class or have forgotten to define it in intitializer file (config.user_class = 'User').

Steps to Reproduce

1. Everything works with Ruby 2.6.6, Rails 6.0
2. The last line of my "config/initializers/sorcery.rb" file is, and has been for several years,
   config.user_class = "Suser"
3. No change to this initializer
4. With Ruby 3.0.6 and Rails 6.1, I get the above error message.

[willnet]

@legacy370 I couldn't reproduce the behavior in my environment. Could you provide instructions on how to replicate it from scratch, or perhaps prepare a sample application?