It is PRINCIPLES - truths; not PRINCIPALS - people in charge of schools or racing teams.

By deleteing the dev database, recreating it from migrations and then preparing the test database; the foreign key contraints now work. Also the database tables are now uft8mb4 instead of lantin1.

May be an idea to do this every time there is a rails update until going live.

db/migrate/20220611192407_create_subprincipleitemgroups.rb

@@ -1,4 +1,4 @@
-class CreateSubprincipalitemgroups < ActiveRecord::Migration[7.0]
+class CreateSubprincipleitemgroups < ActiveRecord::Migration[7.0]
   def change
     create_table :subprincipleitemgroups do |t|
       t.references :subprinciple, null: false, foreign_key: true

db/migrate/20220611194255_create_subprincipleitems.rb

@@ -1,6 +1,6 @@
-class CreateSubprincipalitems < ActiveRecord::Migration[7.0]
+class CreateSubprincipleitems < ActiveRecord::Migration[7.0]
   def change
-    create_table :subprinciplitems do |t|
+    create_table :subprincipleitems do |t|
       t.references :subprincipleitemgroup, null: false, foreign_key: true
       t.text :description
       t.boolean :affirmative