C＃ML.NET从Microsoft教程训练图像模型时出错

Question

您对如何解决此问题有任何想法吗？我试图从本教程中运行项目：https://docs.microsoft.com/en-us/dotnet/machine-learning/tutorials/image-classification-api-transfer-learning一切似乎都不错，但是当我添加行ITransformer trainedModel = trainingPipeline.Fit(trainSet);时，出现了此错误：ArgumentOutOfRangeException: Can't determine the number of source columns without valid data (Parameter 'Source')这是我代码的要旨：{{3} }