old_contents: from django import forms
  
  from fortuitus.feditor.models import TestCase
  
  
  class TestCaseForm(BootstrapFormMixin, forms.ModelForm):
      class Meta:
          model = TestCase
          exclude = ('project',)
new_contents: from django import forms
  
  from fortuitus.feditor.models import TestCase
  
  
  class TestCaseForm(forms.ModelForm):
      class Meta:
          model = TestCase
          exclude = ('project',)
  
subject: Fix NameError