Microsoft-Llama ONNX fails to import, what does this error message mean?

I attempted to import an off-the-shelf Llama ONNX model by Microsoft.
LlamaV2_7B_FT_float16.onnx

I am seeing this import error. What does it mean? Some sort of not supported operation or opset?

Asset import failed, "Assets/Models/llama/ONNX/LlamaV2_7B_FT_float16.onnx" > InvalidOperationException: Sequence contains no matching element
System.Linq.Enumerable.Single[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) (at <8b4edcb4eeea4daaa8ad5fcc9d6d39f1>:0)
Unity.Sentis.ONNX.ONNXConstantsLoader.LoadConstant (Onnx.TensorProto tensorProto, System.IO.FileStream weightStream) (at /Users/username/Downloads/package 2/Runtime/ONNX/ONNXConstantsLoader.cs:27)

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