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)