On mod platforms, some versions of viafabric are tagged as "Release" while others are typed "Alpha" or "Beta". I wonder whether the "Release" tags mean they are somehow "more stable" than Alphas, or are they conveyed other meanings. Since I've received NoClassDefFoundError in one of the "Release" versions (more specifically, ViaFabric 0.4.17+91-main), I need to determine whether try to fix it or just update it.

ViaFabric builds that were labelled as release are basically builds that either added initial support for a new MC version or new major update of viaversion was pushed out to it, It's best to just update regardless of the beta/alpha labelling in terms of VF itself.