Not sure how helpful that comment was. Wish I could help further except to say as a community we should understand each other’s needs without pedantic recommendations!
Just because someone’s native language is not English should not mean that
they get unhelpful comments about the phrasing of their questions.
Okay, if something is obviously unclear, then ask for specific clarification and
more detail, but otherwise, please give a little slack to the world regions
where English doesn’t come first, and be grateful that they can manage as much
as they can in today’s English-centric Internet world.
After all, if you find yourself thinking “this person can’t express themselves
in clear English”, you should first of all ask yourself “how well could I
express myself in their first language?”
When the png-graphs are created, the renderer plugin seems to work. I think, you have to look at the slack part.
Maybe you have a problem with the redirect to localhost too.