I can't import project tiny in Unity 2019

I am using Unity version 2019.2.6f1.
This is the error that I get when I import Project Tiny:

Library\PackageCache\com.unity.tiny@0.16.1-preview\Unity.Serialization.Properties\SerializedObjectViewPropertyBag.cs(192,33): error CS0246: The type or namespace name ‘ICollectionElementGetter<>’ could not be found (are you missing a using directive or an assembly reference?)

I found the solution . I am running tiny mode 0.14.5 on 2018.3.14f1 . It runs fine.

I rolled back to the old version, imported the project and upgrade to the latest one