If you have issues with the triggers that are installed by django-pghistory, we recommend reading django-pgtrigger's troubleshooting guide. It goes over most of the core issues that might happen when creating or migrating triggers.
Special fields, such as Django's ImageField cannot be supplied some of the core field parameter overrides supplied, such as the primary_key attribute.
If a custom field errors because of invalid arguments, use settings.PGHISTORY_EXCLUDE_FIELD_KWARGS. See the settings section here <exclude_field_kwargs> for an example.