Unity 2019.4.3.1f1

[bampee]

Hi.
I am using Unity 2019.4.3.1f1 version to proceed with the video. (Reference link: https://www.youtube.com/watch?v=w-vrSPtab0k)

I am getting an error at the FACS LOAD BUNDLE and am unable to load the .VRCA data.
I was able to get past this issue in the Unity 2022 version, but the avatar will not work in VRC unless the 2019 version is used, so I am having trouble figuring out how to fix the problem.

I would appreciate any help you can give me.

ERROR CODE
[FACS Load Bundle] Getting AssetBundle from local file: C:/Users/Administrator_/Documents/avatar.vrca

UnityEngine.Debug:Log (object)
FACS01.Utilities.FACSLoadBundle/<LoadBundle>d__13:MoveNext () (at Assets/FACS01 Utilities/FACSLoadBundle.cs:110)
UnityEngine.MonoBehaviour:StartCoroutine (System.Collections.IEnumerator)
FACS01.Utilities.FACSLoadBundle:StartLB () (at Assets/FACS01 Utilities/FACSLoadBundle.cs:53)
FACS01.Utilities.FACSLoadBundleEditor:OnInspectorGUI () (at Assets/FACS01 Utilities/Editor/FACSLoadBundleEditor.cs:58)
UnityEngine.GUIUtility:ProcessEvent (int,intptr)

[FACS Load Bundle] Failed to load AssetBundle from file: C:/Users/Administrator_/Documents/avatar.vrca

UnityEngine.Debug:LogError (object)
FACS01.Utilities.FACSLoadBundle/<LoadBundle>d__13:MoveNext () (at Assets/FACS01 Utilities/FACSLoadBundle.cs:128)
UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr)