[Answered ]-AttributeError: module has no attribute

The issue lies within your migrations files, as shown in this issue. Basically, when you generated your previous migration files, it was written that the default was value for a field was random_string.

Now, if you change that function name, your current code will work, but because your already-generated migration files use this function, they will raise an error as they cannot find that function anymore.

I dont know if simply updating the files to replace the name within them would be enough. Other solutions would be to reset the migrations (though it might come as a cost).

The link I’ve provided offers a script to fix that, but I haven’t tested it myself