That is strange, however, if you uninstall (back up your save files first) the old version and then install the new version it should work in my experience.
Viewing post in "Santa Lucia" Build 19 Now Available! comments
So here's what happened,
As the APK downloaded, I Opened it and pressed "install", because I thought it would update the app by doing that...
but it didn't, and it just responded with that error...(*1st attempt*)
After I saw that, I decided to delete the Game entirely off the phone, so that the download can work...
And it happened again... so I decided to screenshot it this time(*this was the 2nd attempt, btw*), to just show the error here, so yea... 😏 just wanted to let ya know...