Update app.py

app.py

@@ -547,7 +547,7 @@ async def analyze_file(
             try:
                 os.unlink(temp_file_path)
             except Exception as cleanup_error:  # FIXED: Use different variable name
-                logger.warning(f"Failed to clean up {temp_file_path}: cleanup_error}")
+                logger.warning(f"Failed to clean up {temp_file_path}: {cleanup_error}")
                 
 @app.get("/download/{file_type}/{query_id}")
 async def download_file(file_type: str, query_id: str):