Unable to train

[Zumbalamambo]

I tried a lot to train but for some reason I just cant train it with custom dataset. It throws the following error, :(

RuntimeError: There were no tensor arguments to this function (e.g., you passed an empty list of Tensors), but no fallback function is registered for schema aten::_cat. This usually means that this function requires a non-empty list of Tensors. Available functions are [CPU, CUDA, QuantizedCPU, BackendSelect, Named, AutogradOther, AutogradCPU, AutogradCUDA, AutogradXLA, AutogradPrivateUse1, AutogradPrivateUse2, AutogradPrivateUse3, Tracer, Autocast, Batched, VmapMode].

Any ways to fix it?

[yxgeee]

It seems some lists are empty, but I cannot localize the exact code given such a brief error notification. Did you solve it?