minor fix

app/main.py

@@ -59,7 +59,7 @@ async def parse_body(request: Request):
 
 @app.post("/upload")
 def upload(data: bytes = Depends(parse_body)):
-    print("Data : " + data)
+    print("Data : " + str(data))
     if data:
         try:
             path = f"{files_dir}/file"