The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A4B469963BF863CC
Get:5 https://download.konghq.com/insomnia-ubuntu default InRelease
Ign:5 https://download.konghq.com/insomnia-ubuntu default InRelease
Get:6 https://download.konghq.com/insomnia-ubuntu default Release
Get:7 https://download.konghq.com/insomnia-ubuntu default Release.gpg
Err:7 https://download.konghq.com/insomnia-ubuntu default Release.gpg
Signed file isn't valid, got 'NODATA' (does the network require authentication?)
Reading package lists... Done
E: GPG error: https://download.konghq.com/insomnia-ubuntu default Release: Signed file isn't valid, got 'NODATA' (does the network require authentication?)
Did anyone actually test installing on Linux?