Whenever I try to Build & Publish any avatar, I get the following error in my console whenever I try to Build & Publish said character

ArgumentException: GUILayout: Mismatched LayoutGroup.Repaint

UnityEngine.GUILayoutUtility.BeginLayoutGroup (UnityEngine.GUIStyle style, UnityEngine.GUILayoutOption[] options, System.Type layoutType) (at C:/buildslave/unity/build/Runtime/IMGUI/Managed/GUILayoutUtility.cs:301)

UnityEditor.EditorGUILayout.BeginHorizontal (UnityEngine.GUIContent content, UnityEngine.GUIStyle style, UnityEngine.GUILayoutOption[] options) (at C:/buildslave/unity/build/Editor/Mono/EditorGUI.cs:7247)

UnityEditor.EditorGUILayout.BeginHorizontal (UnityEngine.GUILayoutOption[] options) (at C:/buildslave/unity/build/Editor/Mono/EditorGUI.cs:7227)

VRC_SdkControlPanel.OnGUIAvatar (VRCSDK2.VRC_AvatarDescriptor avatar) (at Assets/VRCSDK/Dependencies/VRChat/Editor/VRC_SdkControlPanel.cs:959)

VRC_SdkControlPanel.ShowBuildControls () (at Assets/VRCSDK/Dependencies/VRChat/Editor/VRC_SdkControlPanel.cs:246)

VRC_SdkControlPanel.OnGUI () (at Assets/VRCSDK/Dependencies/VRChat/Editor/VRC_SdkControlPanel.cs:146)

System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)

It doesn't open the window for building/publishing but instead gives me this.

I've had this for the past 4 days, with the old SDK and with the new SDK

I've tried several things such as re-installing Unity and cleaning the cache.