Implicit conversion from null tensor to NoneType (#55823)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/55823
Test Plan: Imported from OSS
Reviewed By: gmagogsfm
Differential Revision: D27717324
Pulled By: tugsbayasgalan
fbshipit-source-id: a071b90bcea9e8f2b5da633a8dadd11772fb5101
