Due to numerous issues we just reverted our initial try to make LE Y2038 compatible which, unfortunately, will cause issues (crash loops) if you update from an earlier LE11 nightly build and have binary addons installed - eg PVR clients.
So please uninstall PVR clients and all other addons that you installed from the LibreELEC addon repository before updating to that (or newer) nightly builds.
If you select "keep settings" when uninstalling the addon everything should be as before after re-installing the addons.
New addons should be available in 1 or 2 days. So better wait a bit if that is important to you.
If you didn't read this before updating and are left in a crash-loop then ssh in shortly after the LE splash screen showed up and remove the (esp pvr) addons from /storage/.kodi/addons/
so long,
Hias