diff --git a/litellm/integrations/custom_logger.py b/litellm/integrations/custom_logger.py
index bcfef0fc2b..586c908192 100644
--- a/litellm/integrations/custom_logger.py
+++ b/litellm/integrations/custom_logger.py
@@ -28,6 +28,11 @@ class CustomLogger: # https://docs.litellm.ai/docs/observability/custom_callback
     def log_failure_event(self, kwargs, response_obj, start_time, end_time): 
         pass
 
+    async def async_log_success_event(self, kwargs, response_obj, start_time, end_time):
+        pass
+
+    async def async_log_failure_event(self, kwargs, response_obj, start_time, end_time):
+        pass
 
     #### SINGLE-USE #### - https://docs.litellm.ai/docs/observability/custom_callback#using-your-custom-callback-function
 
@@ -80,24 +85,4 @@ class CustomLogger: # https://docs.litellm.ai/docs/observability/custom_callback
         except:
             # traceback.print_exc()
             print_verbose(f"Custom Logger Error - {traceback.format_exc()}")
-            pass
-
-    async def async_log_failure_event(self, kwargs, response_obj, start_time, end_time, print_verbose, callback_func):
-        # Method definition
-        try:
-            kwargs["log_event_type"] = "post_api_call"
-            await callback_func(
-                kwargs, # kwargs to func
-                response_obj,
-                start_time,
-                end_time,
-            )
-            print_verbose(
-                f"Custom Logger - final response object: {response_obj}"
-            )
-        except:
-            # traceback.print_exc()
-            print_verbose(f"Custom Logger Error - {traceback.format_exc()}")
-            pass
-    
-    
+            pass
\ No newline at end of file