Running a Go bot,enter Pdb environment

[yangchaoFree]

Hi,
I follow the document to run make and download pretrained model,then follow "Running a Go bot" step to run.
When run genmove command,the program enter Pdb environment:
..
genmove black

/data/dev/alphago/ELF/src_py/elf/utils_elf.py(191)copy_from()
-> for k, v in this_src.items():
(Pdb)