seqio.get_mixture_or_task('bool_q_template_0_no_opt_five_shot') failed

[liuzhiyong01]

when I use seqio.get_mixture_or_task('bool_q_template_0_no_opt_five_shot') this method, it ocurred a error:

I used run_example.py this script and I don't modify other files, who help me resolve it.