Hello, thanks for reporting.
Does opening a terminal and typing the command
gpg --keyserver keyserver.ubuntu.com --recv-keys 5A9A06AEF9CB8DB0 && gpg
--armor --export 5A9A06AEF9CB8DB0 | apt-key add - && apt-get update
fix the problem?
** Changed in: apt (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/891144
Title:
Public key errors on wine 3.1 upgrades
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