Builds post 193 use the new version of libbluray. You will need to use the devel branch, do a update which will then upgrade libbluray to 1.x.
You are still on an older version:
armv7-libbluray-osmc 0.9.3-4
To fix this:
sudo nano /etc/apt/sources.list
Then add:
deb http://apt.osmc.tv stretch-devel main
Do another update/dist-upgrade and the package should be upgraded.
After that you can revert back to stable branch (though not required) and then upgrade to latest mediacenter.