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[mojavan]

Ran into the same problem but in december 2025.

Used this solution:

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sudo apt-key list

Check for the last z-wave entry, mine was preceded with [unknown] but could also be [expired] I believe. There is a set of ten double-byte hexadecimal numbers on the line above. You want to copy the last four double-bytes out of the ten (for instance E222 A90F 2E14 8E32), remove the space and fit it at the end of this line:

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sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E222A90F2E148E32

..replace the E222A90F2E148E32 in my example above with the values you got from apt-key list earlier.

Vóila!