系统V20.9通过命令更新展示错误

由于没有公钥，无法验证下列签名： NO_PUBKEY EC34ED227AFAE3F2

➜ ~ sudo apt-get update && sudo apt-get dist-upgrade -y
命中:1 https://proposed-packages.deepin.com/dde-apricot unstable InRelease
命中:2 https://community-packages.deepin.com/deepin apricot InRelease
命中:4 https://community-packages.deepin.com/driver driver InRelease
命中:5 https://community-packages.deepin.com/printer eagle InRelease
命中:6 https://pro-driver-packages.uniontech.com eagle InRelease
命中:7 https://repo.skype.com/deb unstable InRelease
忽略:8 https://www.scootersoftware.com bcompare4 InRelease
获取:9 https://www.scootersoftware.com bcompare4 Release [1,731 B]
命中:10 https://repo.radeon.com/amdgpu/5.4.3/ubuntu jammy InRelease
获取:11 https://www.scootersoftware.com bcompare4 Release.gpg [836 B]
忽略:11 https://www.scootersoftware.com bcompare4 Release.gpg
命中:12 https://repo.radeon.com/rocm/apt/5.4.3 jammy InRelease
命中:3 https://app-store-files.uniontech.com/240124140549262/appstore deepin InRelease
正在读取软件包列表... 完成
W: GPG 错误：https://www.scootersoftware.com bcompare4 Release: 由于没有公钥，无法验证下列签名： NO_PUBKEY EC34ED227AFAE3F2
E: 仓库 “https://www.scootersoftware.com bcompare4 Release” 没有数字签名。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。