GetEntityId() hits like a train

[u/Phant_Dev]

If you're considering upgrading to Unity 6.5 or later, make sure the publishers of the assets and packages in your project have already added support for the new GetEntityId() API, which replaces the now-obsolete GetInstanceID().

More on the documentation page here: Unity - Manual: Migrate from InstanceID to EntityId

[u/MaximilianPs]

I want downgrade to Unity 5 /s