diff --git a/grafana_client/client.py b/grafana_client/client.py
index d295c5c..4a9b597 100644
--- a/grafana_client/client.py
+++ b/grafana_client/client.py
@@ -113,7 +113,7 @@ def __request_runnner(url, json=None, headers=None):
                     response = r.json()
                 except ValueError:
                     response = r.text
-                message = response["message"] if "message" in response else r.text
+                message = response["message"] if type(response) == dict and "message" in response else r.text
 
                 if 500 <= r.status_code < 600:
                     raise GrafanaServerError(
diff --git a/grafana_client/elements/annotations.py b/grafana_client/elements/annotations.py
index a01337e..b22ea79 100644
--- a/grafana_client/elements/annotations.py
+++ b/grafana_client/elements/annotations.py
@@ -52,10 +52,10 @@ def get_annotation(
             params.append("panelId=%s" % panel_id)
 
         if user_id:
-            params.append("userId=%s", user_id)
+            params.append("userId=%s" % user_id)
 
         if ann_type:
-            params.append("type=%s", ann_type)
+            params.append("type=%s" % ann_type)
 
         if tags:
             for tag in tags: