Hello @Christian_D
Unfortunately, I think this plugin only works on Linux distributions, not on Windows. I came here with the same problem 
And from the agent information:
This check parses the information provided by the Apache status module. If you have enabled that module (on Debian/Ubuntu this is the default), then below the URL /server-status Apache show interesting information like:
Perhaps someone here has created a workaround to gather this detailed information with us or another method than this plugin.