Hello,
as the space on /root is not enough - and also you should NOT use /root for such downloads - I decided to cd into /volume1/share/temp
[you will have to replace the share with a shared directory on your nas and create temp there]
After that I could curl inside that directory and update nakivo to 10.7.2 with the updater.sh
In that way it worked for me.
Kind regards and happy new year @all
Martin
kamaste.it GmbH