ERROR: No module named 'tree_reader'

[szf1993325]

python edge_investigate_conflicts_given.py -h
Traceback (most recent call last):
File "/ds3200_1/users_root/shenzongfang/phyckle/comb/test1/edge_investigate_conflicts_given.py", line 4, in
import tree_reader
ModuleNotFoundError: No module named 'tree_reader'
The error appearance, when i run the script in linux . But not find this module in python