Getting ProgrammingError at ... using Heroku - python-3.x

Question

I made some changes to my models.py file and now I return this error when I try to access my heroku app's admin page:
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
The above exception (column testingland_mapcafes.cafe_image_url does not exist
LINE 1: ...s"."venue_type", "testingland_mapcafes"."source", "testingla...
^
) was the direct cause of the following exception:
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/app/.heroku/python/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/contrib/admin/options.py", line 622, in wrapper
return self.admin_site.admin_view(view)(*args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/contrib/admin/sites.py", line 236, in inner
return view(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/utils/decorators.py", line 43, in _wrapper
return bound_method(*args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python3.9/site-packages/django/contrib/admin/options.py", line 1828, in changelist_view
'selection_note': _('0 of %(cnt)s selected') % {'cnt': len(cl.result_list)},
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/models/query.py", line 262, in __len__
self._fetch_all()
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/models/query.py", line 1354, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/models/query.py", line 51, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1202, in execute_sql
cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 99, in execute
return super().execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/app/.heroku/python/lib/python3.9/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
Exception Type: ProgrammingError at /admin/testingland/mapcafes/
Exception Value: column testingland_mapcafes.cafe_image_url does not exist
LINE 1: ...s"."venue_type", "testingland_mapcafes"."source", "testingla...
I have tried running heroku run python3 manage.py migrate and get No migrations to apply.
I deleted my migrations cache folder and also manually dropped a column from my Heroku postgres CLI to try and fix things but fear I only made it worse.
Here is the relevant models.py
class mapCafes(models.Model):
id = models.BigAutoField(primary_key=True)
cafe_name = models.CharField(max_length=200)
cafe_address = models.CharField(max_length=200)
cafe_long = models.FloatField()
cafe_lat = models.FloatField()
geolocation = models.PointField(geography=True, blank=True, null=True)
venue_type = models.CharField(max_length=200)
source = models.CharField(max_length=200)
cafe_image_url = models.CharField(max_length=200, null=False)
When I manually check the table through the Heroku DATABASE CLi the cafe_image_url column is not there - suggesting the migration isn't occurring correctly.
FWIW - everything works correctly on my local server.