Importing tile maps from Tiled as JSON

I’m trying to import a tilemap that was made in Tiled and it isn’t working. I get the following after draging and dropping into the editor

  1. A Datatable Options Menu appears selecting between DataTable, CurveTable, Float Curve & Vector Curve
  2. Error Messages Appears as follows “Cannot Find Property for Column ‘0’ in struct” & “Duplicate Row Name ‘0’”

What would say is the cause of that?