minor bug fix (pbc_type)
minor bug fix (pbc_type)

zh423328/pbc,DoooReyn/pbc,owent-contrib/pbc,xiaoqunSun/pbc,CheyiLin/pbc,zhuoyikang/pbc,owent-contrib/pbc,yubobarye/pbc,MonCoder/pbc,cloudwu/pbc,boyuegame/pbc,cloudwu/pbc