Running segformer error : ValueError: Attempt to convert a value (<generator object preprocessing at 0x7f59f0168f40>) with an unsupported type (<class 'generator'>) to a Tensor.

Running segformer error : ValueError: Attempt to convert a value (<generator object preprocessing at 0x7f59f0168f40>) with an unsupported type (<class 'generator'>) to a Tensor. #1089