Why does this error appear after migration?

Question

Django

After executing makemigrations thumbnail the following error appears:

Migrations for 'thumbnail':
Traceback (most recent call last):
  File "C:\Program Files\PyCharm 2016.2\helpers\pycharm\django_manage.py", line 41, in <module>
    run_module(manage_file, None, '__main__', True)
  File "C:\Python34\lib\runpy.py", line 182, in run_module
    return _run_module_code(code, init_globals, run_name, mod_spec)
  File "C:\Python34\lib\runpy.py", line 96, in _run_module_code
    mod_name, mod_spec, pkg_name, script_name)
  File "C:\Python34\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "F:/Pycharm/Ink\manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 367, in execute_from_command_line
    utility.execute()
  File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 359, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python34\lib\site-packages\django\core\management\base.py", line 305, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Python34\lib\site-packages\django\core\management\base.py", line 356, in execute
    output = self.handle(*args, **options)
  File "C:\Python34\lib\site-packages\django\core\management\commands\makemigrations.py", line 183, in handle
    self.write_migration_files(changes)
  File "C:\Python34\lib\site-packages\django\core\management\commands\makemigrations.py", line 201, in write_migration_files
    migration_string = os.path.relpath(writer.path)
  File "C:\Python34\lib\ntpath.py", line 579, in relpath
    raise ValueError(error)
ValueError: path is on mount 'C:', start on mount 'F:'

Is it possible that I opened this project on another computer and got this error?
How to fix it? I searched on Google, I did not find solutions. Maybe someone faced such a problem?

Answer 1

I had an idea to roll back to the version later and update back to the version above. It worked.