Downloaded weewx_3.7.1-1_all.deb
When installing I get the following error:
Cannot get exclusive lock on the packaging backend.
Please close any other legacy packaging tools that may be open.
Pi: 2011.12
OS:RASPBIAN JESSIE WITH PIXEL
Image with PIXEL desktop based on Debian Jessie
Version:March 2017
Release date:2017-03-02
Kernel version:4.4