An error occurs"TypeError: 'type' object is not subscriptable" when I run an example。

I clone the nearest code from Graphormer branch [2b0b9a7],and I install fairseq branch[@ 98ebe4f].The virtual environments was shown,.But when I run the code, it compiles error:
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`Package Version

antlr4-python3-runtime 4.8
bitarray 2.5.1
certifi 2022.5.18.1
cffi 1.15.0
charset-normalizer 2.0.12
colorama 0.4.4
Cython 0.29.30
dgl 0.7.2
fairseq 1.0.0a0+98ebe4f
googledrivedownloader 0.4
hydra-core 1.0.7
idna 3.3
importlib-metadata 4.11.4
importlib-resources 5.7.1
isodate 0.6.1
Jinja2 3.1.2
joblib 1.1.0
littleutils 0.2.2
lmdb 1.3.0
MarkupSafe 2.1.1
networkx 2.6.3
numpy 1.21.6
ogb 1.3.2
omegaconf 2.0.6
outdated 0.2.1
pandas 1.3.5
pip 21.2.2
portalocker 2.4.0
protobuf 3.20.1
pycparser 2.21
pyparsing 3.0.9
python-dateutil 2.8.2
python-louvain 0.16
pytz 2022.1
PyYAML 6.0
rdflib 6.1.1
rdkit-pypi 2021.9.3
regex 2022.4.24
requests 2.27.1
sacrebleu 2.1.0
scikit-learn 1.0.2
scipy 1.7.3
setuptools 61.2.0
six 1.16.0
tabulate 0.8.9
tensorboardX 2.4.1
threadpoolctl 3.1.0
torch 1.9.1+cu111
torch-geometric 1.7.2
torch-scatter 2.0.9
torch-sparse 0.6.12
torchaudio 0.9.1
tqdm 4.64.0
typing_extensions 4.2.0
urllib3 1.26.9
wheel 0.37.1
zipp 3.8.0
`

Start by reproducing the example from Graphormer commit 2b0b9a7 with fairseq commit 98ebe4f and inspect the TypeError traceback shown in the issue. Compare the installed package versions with the example's requirements and identify the failing entry point; done means the example runs without this error.