Json

API answered with an Errorcode:

404 Not Found – Check API-URL!
API answer (no valid JSON, first 300 chars):
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="profile" href="https://gmpg.org/xfn/11"> 
	<meta name=...
API-Server does answer, but with an error-message:
404 Not Found – Check API-URL!
We have a Problem with JSON here:
Either we got no JSON from the API. Or the basenode-parameter is not ok.
Switch on the Debugmode of the Plugin!