Update app.py

app.py

@@ -234,7 +234,7 @@ def generate_pdf(image_path: str, analysis_text: str, persona: str) -> str:
         print(f"PDF generation error: {str(e)}")
         return None
 
-def upload_to_github(file_path: Optional[str]) -> str:
+def upload_to_github(file_path: str) -> str:
     try:
         if not file_path:
             return "Error: No PDF file generated"