Target host must not be null, or set in parameters

Question

I get this error \"Target host must not be null, or set in parameters\". My manifest file has internet permission set, and I have put \'http://\' before my Url. It still giv

Answer 1

So I replaced the URL, with almost the same URL, except without the underscore and that worked. I realized from further searches (for example here) that URLs with _(underscore) are not valid, although that particular URL may work. Thanks for all your help.