Update manage.py

manage.py

@@ -2,21 +2,16 @@
 import os
 import sys
 
-from future.utils import raise_from
-
 if __name__ == "__main__":
     os.environ.setdefault(
         "DJANGO_SETTINGS_MODULE", "django_extra_field_validation.settings"
     )
     try:
         from django.core.management import execute_from_command_line
-    except ImportError as exc:
-        raise_from(
-            ImportError(
-                "Couldn't import Django. Are you sure it's installed and "
-                "available on your PYTHONPATH environment variable? Did you "
-                "forget to activate a virtual environment?"
-            ),
-            exc,
+    except ImportError:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
         )
     execute_from_command_line(sys.argv)