Django run perfectly with command line and ip address but raise error with wsgi

I have Django website which is running perfectly working with this command in ubuntu: python3 runserver

but when I try to run it with wsgi it raise this error:

ImproperlyConfigured at / Empty static prefix not permitted Request Method: GET Request URL: Django Version: 1.11.16 Exception Type: ImproperlyConfigured Exception Value:
Empty static prefix not permitted Exception Location: /usr/local/lib/python3.5/dist-packages/django/conf/urls/ in static, line 24 Python Executable: /usr/bin/python3 Python Version: 3.5.2 Python Path:
['/var/www/ClinicPsyDemo', '/usr/lib/', '/usr/lib/python3.5', '/usr/lib/python3.5/plat-x86_64-linux-gnu', '/usr/lib/python3.5/lib-dynload', '/usr/local/lib/python3.5/dist-packages', '/usr/lib/python3/dist-packages']