the reason may cause by the way which i used to test UT。 in build_model.py , i found the var"kind" is undefined, so i set kind=“debug”，and this fault is resovled.
the reason may cause by the way which i used to test UT。 in build_model.py , i found the var"kind" is undefined, so i set kind=“debug”，and this fault is resovled.