When I was migrating my blog to Jekyll I ran into the following 403 permission denied error message, when I had restarted the local Jekyll server:
no access permission to /There was no error log whatsoever. It seems like the error message was suppressed, because when I started Jekyll with --no-auto I got the parsing error causing this. So if you run into the same problem and have auto: true in _config.yml then try to start Jekyll with:
jekyll --no-auto --server