refs #1152 handle HTTP error responses without dying

src/opengnsys/RESTApi.py

@@ -168,4 +168,9 @@ class REST(object):
         url = self._getUrl(msg)
         logger.debug('Requesting {}'.format(url))
 
-        return self._request(url, data)
+        try:
+            res = self._request(url, data)
+            return res
+        except:
+            logger.exception()
+            return None