Signature problem with apt-get update

Setup, Configuration and Use Beginners
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21

Can confirm. It does not work. It seems to be not enough. Could you please elaborate what could be the problem and what could be done to solve?

thanks
\thomas

22

Ok. got a solution myself.

I followed this change:

so basically modifying:
% sudo vi /etc/apt/sources.list.d/openhab2.list

then
% apt-get update