diff --git a/litellm/integrations/langfuse.py b/litellm/integrations/langfuse.py
index f4a581eb9f..9b06ec17f2 100644
--- a/litellm/integrations/langfuse.py
+++ b/litellm/integrations/langfuse.py
@@ -93,6 +93,7 @@ class LangFuseLogger:
             )
 
             litellm_params = kwargs.get("litellm_params", {})
+            litellm_call_id = kwargs.get("litellm_call_id", None)
             metadata = (
                 litellm_params.get("metadata", {}) or {}
             )  # if litellm_params['metadata'] == None
@@ -161,6 +162,7 @@ class LangFuseLogger:
                     response_obj,
                     level,
                     print_verbose,
+                    litellm_call_id,
                 )
             elif response_obj is not None:
                 self._log_langfuse_v1(
@@ -255,6 +257,7 @@ class LangFuseLogger:
         response_obj,
         level,
         print_verbose,
+        litellm_call_id,
     ) -> tuple:
         import langfuse
 
@@ -318,7 +321,7 @@ class LangFuseLogger:
 
             session_id = clean_metadata.pop("session_id", None)
             trace_name = clean_metadata.pop("trace_name", None)
-            trace_id = clean_metadata.pop("trace_id", None)
+            trace_id = clean_metadata.pop("trace_id", litellm_call_id)
             existing_trace_id = clean_metadata.pop("existing_trace_id", None)
             update_trace_keys = clean_metadata.pop("update_trace_keys", [])
             debug = clean_metadata.pop("debug_langfuse", None)
@@ -351,9 +354,13 @@ class LangFuseLogger:
 
                 # Special keys that are found in the function arguments and not the metadata
                 if "input" in update_trace_keys:
-                    trace_params["input"] = input if not mask_input else "redacted-by-litellm"
+                    trace_params["input"] = (
+                        input if not mask_input else "redacted-by-litellm"
+                    )
                 if "output" in update_trace_keys:
-                    trace_params["output"] = output if not mask_output else "redacted-by-litellm"
+                    trace_params["output"] = (
+                        output if not mask_output else "redacted-by-litellm"
+                    )
             else:  # don't overwrite an existing trace
                 trace_params = {
                     "id": trace_id,
@@ -375,7 +382,9 @@ class LangFuseLogger:
                 if level == "ERROR":
                     trace_params["status_message"] = output
                 else:
-                    trace_params["output"] = output if not mask_output else "redacted-by-litellm"
+                    trace_params["output"] = (
+                        output if not mask_output else "redacted-by-litellm"
+                    )
 
             if debug == True or (isinstance(debug, str) and debug.lower() == "true"):
                 if "metadata" in trace_params:
diff --git a/litellm/integrations/slack_alerting.py b/litellm/integrations/slack_alerting.py
index 015278c557..00aa0046de 100644
--- a/litellm/integrations/slack_alerting.py
+++ b/litellm/integrations/slack_alerting.py
@@ -164,13 +164,28 @@ class SlackAlerting(CustomLogger):
     ) -> Optional[str]:
         """
         Returns langfuse trace url
+
+        - check:
+        -> existing_trace_id
+        -> trace_id
+        -> litellm_call_id
         """
         # do nothing for now
-        if (
-            request_data is not None
-            and request_data.get("metadata", {}).get("trace_id", None) is not None
-        ):
-            trace_id = request_data["metadata"]["trace_id"]
+        if request_data is not None:
+            trace_id = None
+            if (
+                request_data.get("metadata", {}).get("existing_trace_id", None)
+                is not None
+            ):
+                trace_id = request_data["metadata"]["existing_trace_id"]
+            elif request_data.get("metadata", {}).get("trace_id", None) is not None:
+                trace_id = request_data["metadata"]["trace_id"]
+            elif request_data.get("litellm_logging_obj", None) is not None and hasattr(
+                request_data["litellm_logging_obj"], "model_call_details"
+            ):
+                trace_id = request_data["litellm_logging_obj"].model_call_details[
+                    "litellm_call_id"
+                ]
             if litellm.utils.langFuseLogger is not None:
                 base_url = litellm.utils.langFuseLogger.Langfuse.base_url
                 return f"{base_url}/trace/{trace_id}"
diff --git a/litellm/proxy/_super_secret_config.yaml b/litellm/proxy/_super_secret_config.yaml
index f73c36e49a..7bbf9d3cd0 100644
--- a/litellm/proxy/_super_secret_config.yaml
+++ b/litellm/proxy/_super_secret_config.yaml
@@ -1,4 +1,9 @@
 model_list:
+  - model_name: gpt-3.5-turbo-fake-model
+    litellm_params:
+      model: openai/my-fake-model
+      api_base: http://0.0.0.0:8080 
+      api_key: ""
   - model_name: gpt-3.5-turbo
     litellm_params:
       model: azure/gpt-35-turbo
@@ -14,5 +19,10 @@ model_list:
 router_settings:
   enable_pre_call_checks: true
 
-general_settings: 
-  master_key: sk-1234 # [OPTIONAL] Use to enforce auth on proxy. See - https://docs.litellm.ai/docs/proxy/virtual_keys
+litellm_settings:
+  success_callback: ["langfuse"]
+  failure_callback: ["langfuse"]
+
+general_settings:
+  alerting: ["slack"]
+  
\ No newline at end of file
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 972af40120..9d86bf7c29 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -671,15 +671,21 @@ async def user_api_key_auth(
         _end_user_object = None
         end_user_params = {}
         if "user" in request_data:
-            _end_user_object = await get_end_user_object(
-                end_user_id=request_data["user"],
-                prisma_client=prisma_client,
-                user_api_key_cache=user_api_key_cache,
-            )
-            if _end_user_object is not None:
-                end_user_params["allowed_model_region"] = (
-                    _end_user_object.allowed_model_region
+            try:
+                _end_user_object = await get_end_user_object(
+                    end_user_id=request_data["user"],
+                    prisma_client=prisma_client,
+                    user_api_key_cache=user_api_key_cache,
                 )
+                if _end_user_object is not None:
+                    end_user_params["allowed_model_region"] = (
+                        _end_user_object.allowed_model_region
+                    )
+            except Exception as e:
+                verbose_proxy_logger.debug(
+                    "Unable to find user in db. Error - {}".format(str(e))
+                )
+                pass
 
         try:
             is_master_key_valid = secrets.compare_digest(api_key, master_key)  # type: ignore