Well how about that - Once again the nethserver community comes to my rescue. 
Even though I’m less impressed by my own performance in this particular case…
Many thanks @Ctek and @mrmarkuz for helping out. When I corrected my type and removed the vers parameter it all started to work again. 
I’m not the one to tell but perhaps the HowTo could/should be updated?
Case closed! And now heading for a cold 
.
Kind regards
/Mathias