Channel wx_pub_qr is invalid是什么原因啊？

[xin800]

gulp build --channels="alipay_pc_direct wx_pub wx_pub_qr"
时提示
Channel wx_pub_qr is invalid. The channels you can use: alipay_pc_direct,alipay_qr,alipay_wap,bfb_wap,cb_alipay_pc_direct,cb_alipay_wap,cb_wx_pub,cmb_pc_qr,cmb_wallet,cp_b2b,fqlpay_qr,fqlpay_wap,isv_wap,jdpay_wap,paypal,qpay_pub,upacp_b2b,upacp_pc,upacp_wap,upmp_wap,wx_lite,wx_pub,wx_wap,yeepay_wap.

[michealzh]

wx_pub_qr 是需要您自行根据 支付凭证 credential 内的字符串生成支付的二维码的