Hi wall,
use the same path as you use to call jpg2pdf: "C:\Users\User\Desktop\foto_bluethoot".
You use the very same path as working dir with that command shell in cattura1…
Btw. Bluetooth is spelled with t-o-o-t-h… 😄
Edit: It's not nice to edit a message which already got answers. Now your question is gone…
Best regards,
GerdW

using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019