ValueError: Cannot serialize: <class field_permissions.models.FieldPermissionModelMixin at 0x7f4f64ddfdb8>

[kthrinadh345]

I have python 2.7 and Django 1.11 on my Ubuntu.
when I made makemigrations to my project it has showed me ValueError as fallows...

Migrations for 'fpapp':
fpapp/migrations/0001_initial.py
- Create model Post
Traceback (most recent call last):
File "manage.py", line 22, in
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/init.py", line 364, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/init.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/makemigrations.py", line 193, in handle
self.write_migration_files(changes)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/makemigrations.py", line 231, in write_migration_files
migration_string = writer.as_string()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/writer.py", line 163, in as_string
operation_string, operation_imports = OperationWriter(operation).serialize()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/writer.py", line 120, in serialize
_write(arg_name, arg_value)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/writer.py", line 84, in _write
arg_string, arg_imports = MigrationWriter.serialize(_arg_value)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/writer.py", line 293, in serialize
return serializer_factory(value).serialize()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/serializer.py", line 44, in serialize
item_string, item_imports = serializer_factory(item).serialize()
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/serializer.py", line 396, in serializer_factory
"topics/migrations/#migration-serializing" % (value, get_docs_version())
ValueError: Cannot serialize: <class field_permissions.models.FieldPermissionModelMixin at 0x7f4f64ddfdb8>
There are some values Django cannot serialize into migration files.
For more, see https://docs.djangoproject.com/en/1.11/topics/migrations/#migration-serializing

please Help me on this Issue, Thank you in advance.