exception when I add package of Microsoft.ML.OnnxRuntime?

Hello @mc ,

The error occurred due to the following line of code in your MainActivity.cs file:

private readonly InferenceSession _session = new InferenceSession(""); 

because InferenceSession() requires a valid model path, and "" is not a valid path.

Suggested fix:

var modelPath = Path.Combine(CacheDir.AbsolutePath, "all-MiniLM-L6-v2.onnx"); // replace with your model file name 
using (var modelStream = Assets.Open("models/all-MiniLM-L6-v2.onnx")) // replace with the actual asset path 
using (var modelFile = File.Create(modelPath)) 
{ 
modelStream.CopyTo(modelFile); 
} 
_session = new InferenceSession(modelPath); 

Note 1: While this is not directly related to the reported error, the path used for the vocabulary file also appears to be incorrect. Since the file is located under the Models folder, you should update the reference from vocab.txt to Models/vocab.txt.

Note 2: ONNX Runtime can only load ONNX models (.onnx). If your project contains an Apple Core ML model (.mlmodel), it cannot be loaded through InferenceSession. In that case, you would need to use an ONNX version of the model instead.

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