Warning: GC.stat keys for rails ruby ​​app running on localhost

I just pushed my app to github, In localhost, I can create a database: database: create and run migrations, when I try to start my localhost I have this error:

warning: GC.stat keys were changed from Ruby 2.1. In this case, you refer to obsolete `total_allocated_object' (new key is `total_allocated_objects'). Please check <https://bugs.ruby-lang.org/issues/9924> for more information.

      

        
        
        
      

    

When I go to https://bugs.ruby-lang.org/issues/9924 I see some codes, but I don't know what to do with those codes. Any ideas? Thank!