diff --git a/.gitignore b/.gitignore
index 32f1b6f8e1f..39186159fe0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -98,4 +98,4 @@ LAZY_LOADING_IMPROVEMENTS.md
 **/test-results
 **/playwright-report
 **/*.storageState.json
-**/coverage
\ No newline at end of file
+**/coveragelitellm/.mypy_cache/
diff --git a/litellm/integrations/opentelemetry.py b/litellm/integrations/opentelemetry.py
index 997dd044a65..18898be7dce 100644
--- a/litellm/integrations/opentelemetry.py
+++ b/litellm/integrations/opentelemetry.py
@@ -1631,7 +1631,7 @@ class OpenTelemetry(CustomLogger):
                                     )
 
         except Exception as e:
-            self.handle_callback_failure(callback_name= self.callback_name)  
+            self.handle_callback_failure(callback_name=self.callback_name or "opentelemetry")  
             verbose_logger.exception(
                 "OpenTelemetry logging error in set_attributes %s", str(e)
             )
diff --git a/litellm/proxy/common_request_processing.py b/litellm/proxy/common_request_processing.py
index 136ce696511..d3f01f3bd2c 100644
--- a/litellm/proxy/common_request_processing.py
+++ b/litellm/proxy/common_request_processing.py
@@ -623,7 +623,7 @@ class ProxyBaseLLMRequestProcessing:
 
         return self.data, logging_obj
 
-    async def base_process_llm_request(
+    async def base_process_llm_request(  # noqa: PLR0915
         self,
         request: Request,
         fastapi_response: Response,
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 078ce0edf27..a00f1f605a9 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -11,7 +11,7 @@ import sys
 import time
 import traceback
 import warnings
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 import enum
 from typing import (
     TYPE_CHECKING,
diff --git a/litellm/responses/litellm_completion_transformation/transformation.py b/litellm/responses/litellm_completion_transformation/transformation.py
index 41abbca755c..74cc87713da 100644
--- a/litellm/responses/litellm_completion_transformation/transformation.py
+++ b/litellm/responses/litellm_completion_transformation/transformation.py
@@ -1743,7 +1743,7 @@ class LiteLLMCompletionResponsesConfig:
             and usage.prompt_tokens_details is not None
         ):
             prompt_details = usage.prompt_tokens_details
-            input_details_dict: Dict[str, Optional[int]] = {}
+            input_details_dict: Dict[str, int] = {}
 
             if (
                 hasattr(prompt_details, "cached_tokens")
@@ -1776,7 +1776,7 @@ class LiteLLMCompletionResponsesConfig:
             and usage.completion_tokens_details is not None
         ):
             completion_details = usage.completion_tokens_details
-            output_details_dict: Dict[str, Optional[int]] = {}
+            output_details_dict: Dict[str, int] = {}
             if (
                 hasattr(completion_details, "reasoning_tokens")
                 and completion_details.reasoning_tokens is not None