问题 Trying to run a GeoDjango app on Heroku and it's being a really piece of work. After struggling through a variety of problems, I've come to one I can't seem to hack my way out of. File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 673, in db_parameters type_string = self.db_type(connection) File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/gis/db/models/fields.py", line 105, in db_type return connection.ops.geo_db_type(self)