Rails 5.2 has changed the way initializers are called during certain rake tasks including `db:create`. Initializers that were previously not loaded are now loaded (basically the whole app is loaded). This means any calls to #table_exists? that appear in the app will throw fatal errors as the database doesn't exist yet during that task, but those calls are made before `db:create` has even started, which means the database can't be created.
There are also a few other places in Spree code where #table_exists? is called, and they already call #connected? first to guard against this issue.
DEPRECATION WARNING: ActiveModel::Errors#set is deprecated and will be removed in Rails 5.1. Use model.errors.add(:preferred_discount_amount, ["has an invalid format. Please enter a number."]) instead. (called from block (2 levels) in localize_number at /home/runner/work/openfoodnetwork/openfoodnetwork/lib/spree/localized_number.rb:38)