diff --git a/githubapp/keycloak.py b/githubapp/keycloak.py
index f397b7c..e7b4a9a 100644
--- a/githubapp/keycloak.py
+++ b/githubapp/keycloak.py
@@ -52,7 +52,10 @@ def get_group_id(client: KeycloakAdmin = None):
             """
             group = client.get_groups(query={"search": group_name})
             group = client.get_groups(query={"search": group_name, "briefRepresentation": "true", "exact": "true"})
-            return group[0]["id"]
+            try:
+                return group[0]["id"]
+            except IndexError as e:
+                raise Exception(f"Cannot find group {group_name} in Keycloak")
 
         def get_members(client: KeycloakAdmin = None, group_id: str = None):
             """