Added line about job.get_error()
Added line about job.get_error()

muxuezi/userguide,teragramme/userguide,teragramme/userguide,AaronRanAn/userguide,AaronRanAn/userguide,dato-code/userguide,muxuezi/userguide,camaris/userguide,giserh/userguide,ebottabi/userguide,AaronRanAn/userguide,dato-code/userguide,ebottabi/userguide,giserh/userguide,HunjaeJung/userguide,teragramme/userguide,camaris/userguide,ebottabi/userguide,HunjaeJung/userguide