unity absolutely hates me
i did a fresh install of unity hub, then installed version 2019.4.31f1 with "Android Build Support, Android SDK & NDK Tools", "OpenJDk". then i reinstalled vrchat creator companion and created a new avatar project. i haven't even done a single thing yet, but i get this bizarre error. does anyone have any idea what could be causing this? google has been of no help at all

ArgumentException: The Assembly UnityEditor is referenced by VRCCore-Editor ('Packages/com.vrchat.base/Runtime/VRCSDK/Plugins/VRCCore-Editor.dll'). But the dll is not allowed to be included or could not be found.
UnityEditor.AssemblyHelper.AddReferencedAssembliesRecurse (System.String assemblyPath, System.Collections.Generic.List`1[T] alreadyFoundAssemblies, System.String[] allAssemblyPaths, System.String[] foldersToSearch, System.Collections.Generic.Dictionary`2[TKey,TValue] cache, UnityEditor.BuildTarget target) (at <a259d3c004024353a2c217da97495055>:0)
UnityEditor.AssemblyHelper.AddReferencedAssembliesRecurse (System.String assemblyPath, System.Collections.Generic.List`1[T] alreadyFoundAssemblies, System.String[] allAssemblyPaths, System.String[] foldersToSearch, System.Collections.Generic.Dictionary`2[TKey,TValue] cache, UnityEditor.BuildTarget target) (at <a259d3c004024353a2c217da97495055>:0)
UnityEditor.AssemblyHelper.FindAssembliesReferencedBy (System.String[] paths, System.String[] foldersToSearch, UnityEditor.BuildTarget target) (at <a259d3c004024353a2c217da97495055>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)