I have a project that was building fine in Android yesterday and failed just now (says there’s a compilation error, but it’s fine locally), and I noticed in the build log that it’s somehow picking up Unity 2018.2.17 even though 2018.2.16 is the latest I have via Unity Hub. So you might want to check that in your log and maybe try setting it back to 2018.2.16 in your config (I haven’t tried that, yet).