`graph.HeteroGraph` Error happened when running example

[Vremold]

Recently, I run the example provided with the following command:

dglke_train

By default, it will use FB15k knowledge graph. However, it seems to construct a graph.HeteroGraph which is not suitable for dgl. Here is the error message:

/somevenv/lib/python3.7/site-packages/dgl/heterograph.py:72: DGLWarning: Recommend creating graphs by `dgl.graph(data)` instead of `dgl.DGLGraph(data)`.
  dgl_warning('Recommend creating graphs by `dgl.graph(data)`'
/somevenv/lib/python3.7/site-packages/dgl/heterograph.py:84: DGLWarning: Keyword arguments ['readonly', 'multigraph', 'sort_csr'] are deprecated in v0.5, and can be safely removed in all cases.
  ' removed in all cases.'.format(list(deprecate_kwargs.keys())))
Traceback (most recent call last):
  File "/somevenv/bin/dglke_train", line 8, in <module>
    sys.exit(main())
  File "/somevenv/lib/python3.7/site-packages/dglke/train.py", line 150, in main
    exclude_positive=False)
  File "/somevenv/lib/python3.7/site-packages/dglke/dataloader/sampler.py", line 388, in create_sampler
    return_false_neg=False)
  File "/somevenv/lib/python3.7/site-packages/dgl/contrib/sampling/sampler.py", line 695, in __init__
    self._chunk_size)
  File "dgl/_ffi/_cython/./function.pxi", line 293, in dgl._ffi._cy3.core.FunctionBase.__call__
  File "dgl/_ffi/_cython/./function.pxi", line 239, in dgl._ffi._cy3.core.FuncCall
dgl._ffi.base.DGLError: [17:32:19] /opt/dgl/include/dgl/packed_func_ext.h:117: Check failed: ObjectTypeChecker<TObjectRef>::Check(sptr.get()): Expected type graph.Graph but get graph.HeteroGraph
Stack trace:

How to solve it?

[ArtificialZeng]

how？？