Update main.py

main.py

@@ -17,7 +17,7 @@ async def home():
 @app.post('/PromptBuddy')
 async def PromptLLM(file: UploadFile = File(...), query: str = Form(...)):
 
-    with open(file, 'w') as file:
+    with open(file.filename, 'w') as file:
       file.write('pdf_file')
 
     loader = PyMuPDFLoader(file_path='pdf_file')