Are you in the same situation as I was? It sounds funny, but Group directive in httpd.conf is commented by default. I don’t know why. To fix this, all you have to do is configure Group directive in httpd.conf file of your Oracle HTTP Server instance.
Search for Group in httpd.conf Uncomment Group and specify group name of User which will operate OHS
Ex: Start OHS now, you shouldn’t see those error anymore. Did it help? If not already, you may want to start learning about Nginx web server as well.