diff --git a/servers/fastapi/api/v1/ppt/endpoints/presentation.py b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
index 9e0fd344..a2cbc4ed 100644
--- a/servers/fastapi/api/v1/ppt/endpoints/presentation.py
+++ b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
@@ -223,7 +223,7 @@ async def prepare_presentation(
                     i + 1 if presentation.include_title_slide else i,
                     toc_slide_layout_index,
                 )
-                toc_outline = f"Table of Contents\n\n"
+                toc_outline = "Table of Contents\n\n"
 
                 for outline in presentation_outline_model.slides[
                     outline_index:outlines_to
@@ -478,7 +478,7 @@ async def check_if_api_request_is_valid(
             template = await sql_session.get(TemplateModel, uuid.UUID(template_id))
             if not template:
                 raise Exception()
-        except Exception as e:
+        except Exception:
             raise HTTPException(
                 status_code=400,
                 detail="Template not found. Please use a valid template.",
@@ -554,7 +554,7 @@ async def generate_presentation_handler(
                 presentation_outlines_json = dict(
                     dirtyjson.loads(presentation_outlines_text)
                 )
-            except Exception as e:
+            except Exception:
                 traceback.print_exc()
                 raise HTTPException(
                     status_code=400,
@@ -577,7 +577,7 @@ async def generate_presentation_handler(
 
         # Updating async status
         if async_status:
-            async_status.message = f"Selecting layout for each slide"
+            async_status.message = "Selecting layout for each slide"
             async_status.updated_at = datetime.now()
             sql_session.add(async_status)
             await sql_session.commit()
@@ -626,7 +626,7 @@ async def generate_presentation_handler(
                         i + 1 if request.include_title_slide else i,
                         toc_slide_layout_index,
                     )
-                    toc_outline = f"Table of Contents\n\n"
+                    toc_outline = "Table of Contents\n\n"
 
                     for outline in presentation_outlines.slides[
                         outline_index:outlines_to
@@ -811,7 +811,7 @@ async def generate_presentation_sync(
         return await generate_presentation_handler(
             request, presentation_id, None, sql_session
         )
-    except Exception as e:
+    except Exception:
         traceback.print_exc()
         raise HTTPException(status_code=500, detail="Presentation generation failed")
 
diff --git a/servers/fastapi/services/documents_loader.py b/servers/fastapi/services/documents_loader.py
index a45fde9d..548d19e1 100644
--- a/servers/fastapi/services/documents_loader.py
+++ b/servers/fastapi/services/documents_loader.py
@@ -1,7 +1,7 @@
 import mimetypes
 from fastapi import HTTPException
 import os, asyncio
-from typing import List, Tuple
+from typing import List, Optional, Tuple
 import pdfplumber
 
 from constants.documents import (
@@ -33,10 +33,12 @@ class DocumentsLoader:
 
     async def load_documents(
         self,
-        temp_dir: str,
+        temp_dir: Optional[str] = None,
         load_text: bool = True,
         load_images: bool = False,
     ):
+        """If load_images is True, temp_dir must be provided"""
+
         documents: List[str] = []
         images: List[str] = []
 
@@ -72,7 +74,7 @@ class DocumentsLoader:
         file_path: str,
         load_text: bool,
         load_images: bool,
-        temp_dir: str,
+        temp_dir: Optional[str] = None,
     ) -> Tuple[str, List[str]]:
         image_paths = []
         document: str = ""