runtime error

Exit code: 1. Reason: Traceback (most recent call last): File "/app/app.py", line 13, in <module> from allosaurus.app import read_recognizer File "/usr/local/lib/python3.9/site-packages/allosaurus/app.py", line 5, in <module> from allosaurus.am.factory import read_am File "/usr/local/lib/python3.9/site-packages/allosaurus/am/factory.py", line 3, in <module> from allosaurus.lm.inventory import Inventory File "/usr/local/lib/python3.9/site-packages/allosaurus/lm/inventory.py", line 2, in <module> from allosaurus.lm.mask import * File "/usr/local/lib/python3.9/site-packages/allosaurus/lm/mask.py", line 1, in <module> from .articulatory import * File "/usr/local/lib/python3.9/site-packages/allosaurus/lm/articulatory.py", line 1, in <module> import panphon File "/usr/local/lib/python3.9/site-packages/panphon/__init__.py", line 3, in <module> from panphon._panphon import pat File "/usr/local/lib/python3.9/site-packages/panphon/_panphon.py", line 105, in <module> class FeatureTable(object): File "/usr/local/lib/python3.9/site-packages/panphon/_panphon.py", line 205, in FeatureTable segment: str | None): TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'

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