Line too long (141 > 79 characters):
17 field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='has_review', to='reviews.review'),Line too long (128 > 79 characters):
22 field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='of_ticket', to='reviews.ticket'),