Hi! I can reproduce this bug on latest Debian stable.
Please check the screenshots: 1. https://i.imgur.com/fPCScbm.png 2. https://i.imgur.com/9w0hsyY.png $ lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 9.9 (stretch) Release: 9.9 Codename: stretch $ apt-cache policy yarn yarn: Installed: 1.16.0-1 Candidate: 1.16.0-1 Version table: *** 1.16.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 100 /var/lib/dpkg/status 1.15.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.13.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.12.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.12.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.10.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.10.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.9.4-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.9.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.7.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.6.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.5.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.3.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.2.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.2.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.1.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.0.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 1.0.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.27.5-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.27.4-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.27.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.27.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.24.6-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.24.5-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.24.4-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.24.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.23.4-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.23.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.23.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.22.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.21.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.20.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.19.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.18.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.10-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.9-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.8-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.6-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.5-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.4-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.3-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.2-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.17.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.16.1-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.16.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages 0.15.0-1 500 500 https://dl.yarnpkg.com/debian stable/main amd64 Packages 500 https://dl.yarnpkg.com/debian stable/main all Packages $ Synaptic 0.84.2 here and no mixed architectures, only amd64. Regards, Avinash Sonawane (rootKea) PICT, Pune https://rootkea.wordpress.com