After some month I'm now more active with my NAS and OMV again.
I'll try to upgrade to 2.19 as describes here by Volker : Upgrade to OMV 2.x
There I can read : To make sure you're running the latest OMV 1.x Version, read this thread to check for a rare problem.
My system is 1.17 and not the last 1.XY version ( 1.19 ) which was available in the past.
Entered at CLI omv-update and got error - > see scrennshot
My questions:
Should I delete the /etc/apt/apt.conf in my case too as decribed by ryecoaaron here ?
What else I should do ? Unmout my data drives, delete users ?
THX