Default image for ImageField?

Question

Django

img = models.ImageField('Изображение', upload_to='images', default='default.png')

The model is created automatically, you need to set the default image, the question is how to take it from static? If you set the path to the image, then an error occurs:
The joined path (/static/main/img/default.png) is located outside of the base path component
Thank you in advance.