Import error #11

I installed dias using pip install dias
However, I get this below error while trying to import "import dias.rewriter"

import dias.rewriter
Traceback (most recent call last):
File "", line 1, in
File "/shared/vidyak2/cs/lib/python3.10/site-packages/dias/rewriter.py", line 1487, in
ip.input_transformers_cleanup.append(call_rewrite)
AttributeError: 'NoneType' object has no attribute 'input_transformers_cleanup'