FIX: Incorrect query when removing a group owner.

https://meta.discourse.org/t/group-rename-and-group-owners-removal-problems/85596

app/controllers/admin/groups_controller.rb

@@ -105,7 +105,7 @@ class Admin::GroupsController < Admin::AdminController
   end
 
   def remove_owner
-    group = Group.find_by(params.require(:id))
+    group = Group.find_by(id: params.require(:id))
     raise Discourse::NotFound unless group
 
     return can_not_modify_automatic if group.automatic

spec/requests/admin/groups_controller_spec.rb

@@ -51,6 +51,19 @@ RSpec.describe Admin::GroupsController do
     end
   end
 
+  describe '#remove_owner' do
+    it 'should work' do
+      group.add_owner(user)
+
+      delete "/admin/groups/#{group.id}/owners.json", params: {
+        user_id: user.id
+      }
+
+      expect(response.status).to eq(200)
+      expect(group.group_users.where(owner: true)).to eq([])
+    end
+  end
+
   describe "#bulk_perform" do
     let(:group) do
       Fabricate(:group,