ehsanmok opened a new issue #14875: MXNet to ONNX export bug URL: https://github.com/apache/incubator-mxnet/issues/14875 When trying to convert `yolov2_mobilenetv1.0_coco` pretrained from gluonCV v0.5 to ONNX via `onnx_mxnet.export_model`, I get the following error: ``` /anaconda3/lib/python3.7/site-packages/mxnet/contrib/onnx/mx2onnx/_op_translations.py in convert_slice_axis(node, **kwargs) 1320 axes = int(attrs.get("axis")) 1321 starts = int(attrs.get("begin")) -> 1322 ends = int(attrs.get("end", None)) 1323 if not ends: 1324 raise ValueError("Slice: ONNX doesnt't support 'None' in 'end' attribute") ValueError: invalid literal for int() with base 10: 'None' ``` This matches [this line](https://github.com/apache/incubator-mxnet/blame/master/python/mxnet/contrib/onnx/mx2onnx/_op_translations.py#L1502) which is a bug introduced in [#12878 ](https://github.com/apache/incubator-mxnet/pull/12878).
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