RuRo commented on issue #9712: two consecutive backward cause error Check failed: type_ != nullptr The any container is empty requested URL: https://github.com/apache/incubator-mxnet/issues/9712#issuecomment-476291190 Can confirm, ```python for loss in losses: loss.backward() ``` fails for me with similar error, while ```python autograd.backward(losses) ``` works like a charm.
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