Nextcloud version (eg, 18.0.2) : 18.0.7.1
Operating system and version (eg, Ubuntu 20.04) : Debian GNU/Linux 10 \n \l
Apache or nginx version (eg, Apache 2.4.25) : 2.4.38
PHP version (eg, 7.1) : 7.3.19-1
NextCloudPlus: v 1.28.1
When Updating to NextCloudPlus, I get the following error messages:
version v1.30.0 is available
Update NextCloudPi
[ nc-update ] (Mon Sep 21 09:28:45 CEST 2020)
Downloading updates
Performing updates
Hit:1 http://packages.x2go.org/debian buster InRelease
Hit:2 http://security.debian.org/debian-security buster/updates InRelease
Hit:3 http://deb.debian.org/debian buster InRelease
Hit:4 http://deb.debian.org/debian buster-updates InRelease
Hit:5 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:6 https://deb.nodesource.com/node_10.x buster InRelease
Get:7 http://ppa.launchpad.net/jtaylor/keepass/ubuntu focal InRelease [17.5 kB]
Get:8 http://ppa.launchpad.net/snappy-dev/image/ubuntu focal InRelease [18.1 kB]
Get:9 http://ppa.launchpad.net/yktooo/ppa/ubuntu focal InRelease [17.5 kB]
Err:7 http://ppa.launchpad.net/jtaylor/keepass/ubuntu focal InRelease
The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY 7858088158B80F90
Err:8 http://ppa.launchpad.net/snappy-dev/image/ubuntu focal InRelease
The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY F1831DDAFC42E99D
Err:9 http://ppa.launchpad.net/yktooo/ppa/ubuntu focal InRelease
The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY 66EFE2D582CE5D8A
Reading package listsā¦
W: GPG error: http://ppa.launchpad.net/jtaylor/keepass/ubuntu focal InRelease: The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY 7858088158B80F90
E: The repository āhttp://ppa.launchpad.net/jtaylor/keepass/ubuntu focal InReleaseā is not signed.
W: GPG error: http://ppa.launchpad.net/snappy-dev/image/ubuntu focal InRelease: The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY F1831DDAFC42E99D
E: The repository āhttp://ppa.launchpad.net/snappy-dev/image/ubuntu focal InReleaseā is not signed.
W: GPG error: http://ppa.launchpad.net/yktooo/ppa/ubuntu focal InRelease: The following signatures couldnāt be verified because the public key is not available: NO_PUBKEY 66EFE2D582CE5D8A
E: The repository āhttp://ppa.launchpad.net/yktooo/ppa/ubuntu focal InReleaseā is not signed.