From the release note
From the release note:
This release contains an update to define a new error code, XR_ERROR_RUNTIME_UNAVAILABLE, now returned by the loader at xrCreateInstance and xrEnumerateInstanceProperties when it cannot find or load a runtime for some reason. This should be more clear for developers when encountering it, as well as helpful when troubleshooting errors hit by users. (The previously-returned error was typically XR_ERROR_INSTANCE_LOST, which is confusing when returned when trying to create an instance.) This release also includes a new multi-vendor extension, a new vendor extension, and improved concurrency handling in the loader, among smaller fixes.
sudo dnf upgrade --refresh --advisory=FEDORA-2021-37419f07ce
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