Fixed issue in VPCFlowLogs

DataConnectors/AWS-S3-AzureFunction/AzFun-AWS-S3-Ingestion/__init__.py

@@ -228,6 +228,13 @@ class S3Client:
         except Exception as err:
             logging.error('Error while unpacking file {} - {}'.format(key, err))
 
+    @staticmethod
+    def convert_empty_string_to_null_values(d: dict):
+        for k, v in d.items():
+            if v == '' or (isinstance(v, list) and len(v) == 1 and v[0] == ''):
+                d[k] = None
+        return d
+        
     @staticmethod
     def format_date(date_string, input_format, output_format):
         try: