diff --git a/setup.py b/setup.py
index 9a85b2f..04772d0 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name="tc-analyzer-lib",
-    version="1.4.8",
+    version="1.4.9",
     author="Mohammad Amin Dadgar, TogetherCrew",
     maintainer="Mohammad Amin Dadgar",
     maintainer_email="dadgaramin96@gmail.com",
diff --git a/tc_analyzer_lib/tc_analyzer.py b/tc_analyzer_lib/tc_analyzer.py
index 2a11beb..cb24734 100644
--- a/tc_analyzer_lib/tc_analyzer.py
+++ b/tc_analyzer_lib/tc_analyzer.py
@@ -232,9 +232,15 @@ def check_platform(self):
                 f"Platform with platform_id: {self.platform_id} doesn't exist!"
             )
 
-    def get_latest_networkx_graph(self, member_acitivities_networkx_data: dict):
+    def get_latest_networkx_graph(
+        self, member_acitivities_networkx_data: dict
+    ) -> dict | None:
         """
         just getting the latest networkx object (latest graph)
         """
-        latest_date = max(member_acitivities_networkx_data.keys())
-        return {latest_date: member_acitivities_networkx_data[latest_date]}
+        # if there was any data availabe
+        if member_acitivities_networkx_data.keys():
+            latest_date = max(member_acitivities_networkx_data.keys())
+            return {latest_date: member_acitivities_networkx_data[latest_date]}
+        else:
+            return None