https://en.opensuse.org/SDB:System_upgrade
linking
A live upgrade from the prior version is officially supported. This allows to perform a complete operating system upgrade in place, without reloading everything from scratch
the link offically suported is broken
https://features.opensuse.org/305634
**Internal server error**
Passenger encountered the following error: The application spawner server exited unexpectedly: Unexpected end-of-file detected.
Exception class:PhusionPassenger::ClassicRails::ApplicationSpawner::ErrorBacktrace:
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