Getting a TypeError when making a migration or running the server

Hi all, I’ve been struggling with an issue over the past week where I can’t get my site to run with a GeoDjango model. Whenever I run makemigrations or runserver it returns this:

Traceback (most recent call last):
File "", line 21, in <module>
File "", line 17, in main
File "C:\Python38\lib\site-packages\django\core\management\", line 401, in 
File "C:\Python38\lib\site-packages\django\core\management\", line 377, in execute
File "C:\Python38\lib\site-packages\django\", line 24, in setup
File "C:\Python38\lib\site-packages\django\apps\", line 114, in populate
File "C:\Python38\lib\site-packages\django\apps\", line 211, in import_models
self.models_module = import_module(models_module_name)
File "C:\Python38\lib\importlib\", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\Python38\lib\site-packages\django\contrib\auth\", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "C:\Python38\lib\site-packages\django\contrib\auth\", line 47, in <module>
class AbstractBaseUser(models.Model):
File "C:\Python38\lib\site-packages\django\db\models\", line 121, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "C:\Python38\lib\site-packages\django\db\models\", line 325, in add_to_class
value.contribute_to_class(cls, name)
File "C:\Python38\lib\site-packages\django\db\models\", line 208, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "C:\Python38\lib\site-packages\django\db\", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "C:\Python38\lib\site-packages\django\db\", line 207, in __getitem__
backend = load_backend(db['ENGINE'])
File "C:\Python38\lib\site-packages\django\db\", line 111, in load_backend
return import_module('%s.base' % backend_name)
File "C:\Python38\lib\importlib\", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "C:\Python38\lib\site-packages\django\contrib\gis\db\backends\postgis\", line 6, in <module>
from .features import DatabaseFeatures
File "C:\Python38\lib\site-packages\django\contrib\gis\db\backends\postgis\", line 1, in <module>
from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
File "C:\Python38\lib\site-packages\django\contrib\gis\db\backends\base\", line 3, in <module>
from django.contrib.gis.db.models import aggregates
File "C:\Python38\lib\site-packages\django\contrib\gis\db\models\", line 3, in <module>
import django.contrib.gis.db.models.functions  # NOQA
File "C:\Python38\lib\site-packages\django\contrib\gis\db\models\", line 3, in <module>
from django.contrib.gis.db.models.fields import BaseSpatialField, GeometryField
File "C:\Python38\lib\site-packages\django\contrib\gis\db\models\", line 3, in <module>
from django.contrib.gis import forms, gdal
File "C:\Python38\lib\site-packages\django\contrib\gis\forms\", line 3, in <module>
from .fields import (  # NOQA
File "C:\Python38\lib\site-packages\django\contrib\gis\forms\", line 2, in <module>
from django.contrib.gis.gdal import GDALException
File "C:\Python38\lib\site-packages\django\contrib\gis\gdal\", line 28, in <module>
from django.contrib.gis.gdal.datasource import DataSource
File "C:\Python38\lib\site-packages\django\contrib\gis\gdal\", line 39, in <module>
from django.contrib.gis.gdal.driver import Driver
File "C:\Python38\lib\site-packages\django\contrib\gis\gdal\", line 5, in <module>
from django.contrib.gis.gdal.prototypes import ds as vcapi, raster as rcapi
File "C:\Python38\lib\site-packages\django\contrib\gis\gdal\prototypes\", line 9, in <module>
from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
File "C:\Python38\lib\site-packages\django\contrib\gis\gdal\", line 46, in <module>
lgdal = CDLL(lib_path)
File "C:\Python38\lib\ctypes\", line 369, in __init__
self._handle = _dlopen(self._name, mode)
TypeError: LoadLibrary() argument 1 must be str, not list

I’m not quite sure why it returns this way, all packages were properly installed as was my PostGIS db and model. I looked in and saw there was a list of gdal dll files (EX: gdal203.dll, gdal202.dll, etc.) even though all of those weren’t in the bin. Could that be creating my issue?

Thank you in advance for any help. If there are any other scripts I need to share in order to solve this please lmk.

Hi Howard

If you check the code here, the lib_path variable comes from your settings file:

It looks like you’ve set GDAL_LIBRARY_PATH to a list when it should be a string?



1 Like

Hi Adam,

I can’t thank you enough man, I’m real new to python and Django but am learning and using them to help with a research lab I’m in at school, so it’s a bit embarrassing I made that mistake haha. Thank you once again!