pi@berry3:~/Downloads $ uname -a
Linux 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux
pi@ondoberry3:~/Downloads $ sudo apt-get install -f ./GatewayConfigTool_1.2.3_am d64.deb
Reading package lists… Done
Building dependency tree
Reading state information… Done
Note, selecting ‘gatewayconfigtool:amd64’ instead of ‘./GatewayConfigTool_1.2.3_ amd64.deb’
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gatewayconfigtool:amd64 : Depends: libnotify4:amd64 but it is not installable
Depends: libappindicator1:amd64 but it is not install able
Depends: libxtst6:amd64 but it is not installable
Depends: libnss3:amd64 but it is not installable
Depends: libxss1:amd64 but it is not installable
E: Unable to correct problems, you have held broken packages.
Please help