error when gen onnx model#5

error when loading `torch.onnx.export(model, text_tokens, "clip-text-vit-32.onnx", export_params=True, opset_version=12, do_constant_folding=True, input_names = ['input'], output_names = ['output'], dynamic_axes={'input' : {0 : 'batch_size'}, 'output' : {0 : 'batch_size'}})` outputs ``` ============= Diagnostic Run torch.onnx.export version 2.0.1+cu118 ============= verbose: False, log level: Level.ERROR ======================= 0 NONE 0 NOTE 0 WARNING 1 ERROR ======================== ERROR: missing-standard-symbolic-function ========================================= Exporting the operator 'aten::unflatten' to ONNX opset version 12 is not supported. Please feel free to request support or submit a pull request on PyTorch GitHub: https://github.com/pytorch/pytorch/issues. None <Set verbose=True to see more details> --------------------------------------------------------------------------- UnsupportedOperatorError Traceback (most recent call last) [<ipython-input-12-465ac7da98a7>](https://localhost:8080/#) in <cell line: 1>() ----> 1 torch.onnx.export(model, text_tokens, "clip-text-vit-32.onnx", export_params=True, opset_version=12, do_constant_folding=True, input_names = ['input'], output_names = ['output'], dynamic_axes={'input' : {0 : 'batch_size'}, 'output' : {0 : 'batch_size'}}) 4 frames [/usr/local/lib/python3.10/dist-packages/torch/onnx/utils.py](https://localhost:8080/#) in _run_symbolic_function(graph, block, node, inputs, env, operator_export_type) 1899 return graph_context.op(op_name, *inputs, **attrs, outputs=node.outputsSize()) # type: ignore[attr-defined] 1900 -> 1901 raise errors.UnsupportedOperatorError( 1902 symbolic_function_name, 1903 opset_version, UnsupportedOperatorError: Exporting the operator 'aten::unflatten' to ONNX opset version 12 is not supported. Please feel free to request support or submit a pull request on PyTorch GitHub: https://github.com/pytorch/pytorch/issues. ```