# makemigration for clean project **URL:** \ **Category:** Mystery Errors\ **Created:** [August 24, 2023, 9:11am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332 "2023-08-24T09:11:54Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 9:11am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/1 "2023-08-24T09:11:55Z")
Hi all, I created standard django project, i added standard app with name ‘authentication’, i changed DB config to postgreqsl, I have done inspect for read models from db and write into authentication\>models.py, i added autentication to my installed app list, now i want to make migration but “source code string cannot contain null bytes error” what should i do? ---
**Author:** ![addwebsolution](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/addwebsolution/32/23762_2.png) [@addwebsolution](https://forum.djangoproject.com/u/addwebsolution)\ **Post date:** [August 24, 2023, 9:20am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/2 "2023-08-24T09:20:00Z")
Copy and paste the complete traceback here ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 10:03am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/3 "2023-08-24T10:03:13Z")
Traceback (most recent call last): File “D:\Django\project\manage.py”, line 22, in main() File “D:\Django\project\manage.py”, line 18, in main execute\_from\_command\_line(sys.argv) File “C:\Python311\Lib\site-packages\django\core\management\__init_\_.py”, line 442, in execute\_from\_command\_line utility.execute() File “C:\Python311\Lib\site-packages\django\core\management\__init_\_.py”, line 416, in execute django.setup() File “C:\Python311\Lib\site-packages\django\__init_\_.py”, line 24, in setup apps.populate(settings.INSTALLED\_APPS) File “C:\Python311\Lib\site-packages\django\apps\registry.py”, line 116, in populate app\_config.import\_models() File “C:\Python311\Lib\site-packages\django\apps\config.py”, line 269, in import\_models self.models\_module = import\_module(models\_module\_name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File “C:\Python311\Lib\importlib\__init_\_.py”, line 126, in import\_module return \_bootstrap.\_gcd\_import(name[level:], package, level) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File “”, line 1204, in \_gcd\_import File “”, line 1176, in \_find\_and\_load File “”, line 1147, in \_find\_and\_load\_unlocked File “”, line 690, in \_load\_unlocked File “”, line 936, in exec\_module File “”, line 1074, in get\_code File “”, line 1004, in source\_to\_code File “”, line 241, in \_call\_with\_frames\_removed SyntaxError: source code string cannot contain null bytes ---
**Author:** ![addwebsolution](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/addwebsolution/32/23762_2.png) [@addwebsolution](https://forum.djangoproject.com/u/addwebsolution)\ **Post date:** [August 24, 2023, 10:07am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/4 "2023-08-24T10:07:32Z")
> [@Reza](#): > > DB config to postgreqsl can you share your DB config ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 10:09am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/5 "2023-08-24T10:09:44Z")
‘default’: { ‘ENGINE’: ‘django.db.backends.postgresql’, ‘NAME’: ‘old\_database’, ‘USER’: ‘user1’, ‘PASSWORD’: ‘User124082023’, ‘HOST’: ‘localhost’, ‘PORT’: ‘5432’, } ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 10:12am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/6 "2023-08-24T10:12:02Z")
py manage.py inspectdb \> authentication/models.py worked fine. Is that means the DB config is working? ---
**Author:** ![addwebsolution](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/addwebsolution/32/23762_2.png) [@addwebsolution](https://forum.djangoproject.com/u/addwebsolution)\ **Post date:** [August 24, 2023, 10:15am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/7 "2023-08-24T10:15:47Z")
> [@PeimarReza](#): > > ‘NAME’: ‘old\_database’, Is this some old DB that you are using ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 10:18am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/8 "2023-08-24T10:18:21Z")
only the name is this, it is postgreqsl 14, up and run ---
**Author:** ![addwebsolution](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/addwebsolution/32/23762_2.png) [@addwebsolution](https://forum.djangoproject.com/u/addwebsolution)\ **Post date:** [August 24, 2023, 10:28am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/9 "2023-08-24T10:28:58Z")
There seems to be a damaged source file that contain an invalid character. ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 10:31am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/10 "2023-08-24T10:31:42Z")
thank you so much, but i just installed python + django ---
**Author:** ![KenWhitesell](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/kenwhitesell/32/280_2.png) [@KenWhitesell](https://forum.djangoproject.com/u/KenWhitesell)\ **Post date:** [August 24, 2023, 1:21pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/11 "2023-08-24T13:21:45Z")
@addwebsolution isn’t referring to software you’ve installed, but to your project itself. That error you are getting is most frequently seen when a source code file has gotten corrupted somehow. Since you have directed the output of an `inspect` command into your models.py file, that would be the file I would check. ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 2:21pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/12 "2023-08-24T14:21:09Z")
thank you so much, i deleted my project, and created from first, also i checked without Inspect, the result was same, ---
**Author:** ![KenWhitesell](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/kenwhitesell/32/280_2.png) [@KenWhitesell](https://forum.djangoproject.com/u/KenWhitesell)\ **Post date:** [August 24, 2023, 2:26pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/13 "2023-08-24T14:26:09Z")
I see you’re using Python 3.11. What version of Django are you using? ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 24, 2023, 3:20pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/14 "2023-08-24T15:20:57Z")
C:\Windows\System32\>django-admin --version 4.2.4 ---
**Author:** ![KenWhitesell](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/kenwhitesell/32/280_2.png) [@KenWhitesell](https://forum.djangoproject.com/u/KenWhitesell)\ **Post date:** [August 24, 2023, 7:41pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/15 "2023-08-24T19:41:55Z")
How are you creating your project? What precisely do you mean by: > [@Reza](#): > > and created from first ---
**Author:** ![Reza](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/reza/32/15557_2.png) [@Reza](https://forum.djangoproject.com/u/Reza)\ **Post date:** [August 25, 2023, 1:34pm UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/16 "2023-08-25T13:34:04Z")
1- django-admin startproject my\_project\_name 2- cd my\_project\_name 3- py manage.py startapp authentication 4- config DB… in setting.py file 5- python manage.py inspectdb \> authentication/models.py 6- verify manually models with DB tables 7- add app (authentication) to installed apps in setting.py 8- python manage.py makemigrations \>\>\> Error ---
**Author:** ![agrillo91](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/agrillo91/32/24259_2.png) [@agrillo91](https://forum.djangoproject.com/u/agrillo91)\ **Post date:** [October 1, 2024, 6:51am UTC](https://forum.djangoproject.com/t/makemigration-for-clean-project/23332/17 "2024-10-01T06:51:33Z")
I’m having the exactly same problem. Did you finally find a way to solve it?