StandardError: Directly inheriting from ActiveRecord::Migration is not supported.

[Malstrom]

When I try to execute the migrations. The solution is to change repo of payola gem in gem 'payola-payments', git: 'https://github.com/alekseenko/payola'

You need to resolve this issue in Initial installation of rails project

[Malstrom]

I suggest change https://raw.github.com/RailsApps/rails-composer/master/composer.rb row 1115 with:
gem 'payola-payments', git: 'https://github.com/alekseenko/payola'

or ask official payola repo to change ActiveRecord version.