Send error to the flush callback when event dispatcher receives non-200 response

Author: nathanielwarner

vwo/event/event_dispatcher.py

@@ -253,7 +253,11 @@ def sync_with_vwo(self, events):
             else:
                 self.logger.log(LogLevelEnum.ERROR, LogMessageEnum.ERROR_MESSAGES.BULK_NOT_PROCESSED.format(file=FILE))
             if self.flush_callback:
-                self.flush_callback(None, events)
+                if status_code == 200:
+                    error = None
+                else:
+                    error = resp
+                self.flush_callback(error, events)
         except Exception as err:
             self.logger.log(LogLevelEnum.ERROR, LogMessageEnum.ERROR_MESSAGES.BULK_NOT_PROCESSED.format(file=FILE))
             if self.flush_callback: