Identification and treatment of invalid/missing certificate

ingress/app/services/smartdataapi/SmartDataContextApiClient.php

@@ -42,10 +42,13 @@ class SmartDataContextApiClient
 
         $response = curl_exec($ch);
         $error = curl_error($ch);
+        $http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
         curl_close($ch);
 
         if ($error) {
             return ['errors' => [$error]];
+        } else if ($http_status == 401) {
+            return ['errors' => ["Unauthorized (invalid certificate)."]];
         }
 
         return json_decode($response, true);