I've been getting this error for a while, and have been trying to ignore it since it's not preventing it from running or compiling, but it's that's one red exclamation point I see every time. It says this:
System.ArgumentException: JSON parse error: The document is empty.
at (wrapper managed-to-native) UnityEngine.JsonUtility:FromJson (string,System.Type)
at UnityEngine.JsonUtility.FromJson[MaterialUiData] (System.String json) [0x00000] in C:\buildslave\unity\build\artifacts\generated\common\modules\JSONSerialize\JsonUtilityBindings.gen.cs:25
at MaterialUI.MaterialUIDataTool.LoadData () [0x0003b] in D:\....\Assets\MaterialUI\Editor\Tools\MaterialUIDataTool.cs:87
at MaterialUI.MaterialUIDataTool.Initialize () [0x00000] in D:\....\Assets\MaterialUI\Editor\Tools\MaterialUIDataTool.cs:43
at MaterialUI.MaterialUIDataTool..cctor () [0x0000b] in D:\....\Assets\MaterialUI\Editor\Tools\MaterialUIDataTool.cs:38
Any clue on what to do? Hard to tell you when it first happened, if there's something I did that triggered it, or where in my project I can debug it since it doesn't tell me any specifics and I didn't want to dig into MaterialUIDataTool.cs if nobody else gets this problem. Thanks, my implementation is looking great so far, just trying to work out the kinks..