diff --git a/api/chalicelib/core/alerts.py b/api/chalicelib/core/alerts.py
index e5316ba06..55bd4a29e 100644
--- a/api/chalicelib/core/alerts.py
+++ b/api/chalicelib/core/alerts.py
@@ -138,7 +138,10 @@ def send_by_email(notification, destination):
 
 
 def send_by_email_batch(notifications_list):
+    if not helper.has_smtp():
+        print("no SMTP configuration for email notifications")
     if notifications_list is None or len(notifications_list) == 0:
+        print("no email notifications")
         return
     for n in notifications_list:
         send_by_email(notification=n.get("notification"), destination=n.get("destination"))
diff --git a/api/schemas.py b/api/schemas.py
index 314a0f7d2..fdea7f439 100644
--- a/api/schemas.py
+++ b/api/schemas.py
@@ -560,6 +560,8 @@ class _SessionSearchEventRaw(__MixedSearchFilter):
                 assert len(values["source"]) > 0 and isinstance(values["source"][0], int), \
                     f"source of type int if required for {PerformanceEventType.time_between_events}"
             else:
+                assert "source" in values, f"source is required for {values.get('type')}"
+                assert isinstance(values["source"], list), f"source of type list is required for {values.get('type')}"
                 for c in values["source"]:
                     assert isinstance(c, int), f"source value should be of type int for {values.get('type')}"
         elif values.get("type") == EventType.error and values.get("source") is None:
diff --git a/utilities/utils/helper.js b/utilities/utils/helper.js
index b012ccf6c..22fcd0fd5 100644
--- a/utilities/utils/helper.js
+++ b/utilities/utils/helper.js
@@ -174,6 +174,13 @@ const getValue = function (obj, key) {
     return undefined;
 }
 const sortPaginate = function (list, filters) {
+    if (typeof (list) === "object" && !Array.isArray(list)) {
+        for (const [key, value] of Object.entries(list)) {
+            list[key] = sortPaginate(value, filters);
+        }
+        return list
+    }
+
     const total = list.length;
     list.sort((a, b) => {
         const tA = getValue(a, "timestamp");