Eager autoloading required to avoid errors

[mach-kernel]

[2] pry(main)> Ability.new(User.first)
D, [2018-07-16T21:31:37.434025 #13581] DEBUG -- :   User Load (0.4ms)  SELECT  "users".* FROM "use
rs" ORDER BY "users"."id" ASC LIMIT $1  [["LIMIT", 1]]
D, [2018-07-16T21:31:37.435883 #13581] DEBUG -- :    (0.3ms)  SELECT "roles"."name" FROM "roles" I
NNER JOIN "roles_users" ON "roles"."id" = "roles_users"."role_id" WHERE "roles_users"."user_id" =
$1  [["user_id", 1]]
NoMethodError: undefined method `permissions' for nil:NilClass
from /Users/mach/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/bundler/gems/warhol-206ccd0bdd0b/lib/wa
rhol/router.rb:37:in `block in apply_permissions'

Can be resolved with, but needs documentation:

Policy.constants.each { |c| Policy.const_get(c)