Can't provision GDK - seeding database fails on `06_teams`

I have been fighting with the GDK to try to get a fresh GDK-EE installation. After bumping into the issue with https://gitlab.com/gitlab-org/gitlab-ce/issues/41390.

Now I am getting an error in 06_teams:

== Seed from /Users/joshua/projects/gdk-ee/gitlab/db/fixtures/development/05_users.rb
.........................
OK

== Seed from /Users/joshua/projects/gdk-ee/gitlab/db/fixtures/development/06_teams.rb
........................rake aborted!
NoMethodError: undefined method `add_20' for #<ProjectTeam:0x00007fa4c96fe6e8>
/Users/joshua/.rvm/gems/ruby-2.3.6/gems/seed-fu-2.3.6/lib/seed-fu/runner.rb:46:in `eval'
/Users/joshua/projects/gdk-ee/gitlab/app/models/project_team.rb:27:in `add_role'
/Users/joshua/projects/gdk-ee/gitlab/app/models/project.rb:234:in `add_role'
(eval):17:in `block (6 levels) in run_file'
(eval):16:in `each'
(eval):16:in `block (5 levels) in run_file'

development.log contains:

  User Exists (0.6ms)  SELECT  1 AS one FROM "users" WHERE (LOWER("users"."username") = LOWER('annamarie') AND "users"."id" != 3) LIMIT 1
  Namespace Load (0.3ms)  SELECT  "namespaces".* FROM "namespaces" WHERE "namespaces"."owner_id" = $1 AND "namespaces"."type" IS NULL LIMIT 1  [["owner_id", 3]]
  Project Load (0.7ms)  SELECT "projects".* FROM "projects"
  User Load (1.0ms)  SELECT "users".* FROM "users"
   (0.3ms)  ROLLBACK
  Route Load (0.2ms)  SELECT  "routes".* FROM "routes" WHERE "routes"."source_id" = $1 AND "routes"."source_type" = $2 LIMIT 1  [["source_id", 2], ["source_type", "Project"]]
undefined method `add_10' for #<ProjectTeam:0x00007ffd711e8180> excluded from capture: DSN not set