This appears to be a simple renaming error. These should be radar-2 through radar-5.

7.161 Script recipe-functions.lua:24: Recipe radar-mk2 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk2 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk3 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk2 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk4 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk5 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk3 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk3 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk4 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk5 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk4 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk4 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk5 does not exist.
7.161 Script recipe-functions.lua:24: Recipe radar-mk5 does not exist.

These are broken technologies and should be "radars-1" through "radars-4".

12.494 Script technology-functions.lua:152: Technology radar-1 does not exist.
12.494 Script technology-functions.lua:131: Technology radar-1 does not exist.
12.495 Script technology-functions.lua:152: Technology radar-1 does not exist.
12.495 Script technology-functions.lua:131: Technology radar-3 does not exist.
12.495 Script technology-functions.lua:131: Technology radar-4 does not exist.

See if the latest update fixes your issue.

The names are correct they are for the disabled radars in shinybobs, and the error is purely a warning. However more logic has been added in the latest release to stop log spam :)