Sir, SELFSERVICES is a project name under SELFSERVICES settings.py and wsgi.py file. So that is capital letter only. Yes without SSL it is working fine after enable the SSL it is not working.
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at you@example.com to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.