ModuleNotFoundError: No module named 'bddl.activity_base'

[biguard]

when behavior replay:
INFO:root:Importing iGibson (igibson module)
INFO:root:Assets path: E:\pythonprojects\iGibson\iGibson\igibson\data/assets
INFO:root:Gibson Dataset path: E:\pythonprojects\iGibson\iGibson\igibson\data/g_dataset
INFO:root:iG Dataset path: E:\pythonprojects\iGibson\iGibson\igibson\data/ig_dataset
INFO:root:3D-FRONT Dataset path: E:\pythonprojects\iGibson\iGibson\igibson\data/threedfront_dataset
INFO:root:CubiCasa5K Dataset path: E:\pythonprojects\iGibson\iGibson\igibson\data/cubicasa_dataset
INFO:root:iGibson Key path: E:\pythonprojects\iGibson\iGibson\igibson\data/igibson.key
INFO:root:Example path: E:\pythonprojects\iGibson\iGibson\igibson\examples
INFO:root:Example config path: E:\pythonprojects\iGibson\iGibson\igibson\examples\configs
Traceback (most recent call last):
File "e:\pythonprojects\iGibson\iGibson\igibson\examples\behavior\behavior_demo_replay.py", line 15, in
from igibson.activity.activity_base import iGBEHAVIORActivityInstance
File "e:\pythonprojects\igibson\igibson\igibson\activity\activity_base.py", line 6, in
from bddl.activity_base import BEHAVIORActivityInstance
ModuleNotFoundError: No module named 'bddl.activity_base'

And there is no replay branch in BDDL.