微信支付-》微信分享网页 WXApi sendReq 为什么无法调用？

打印日志：

2019-11-15 11:20:42.063236+0800 TDEmploy[9080:1779801] wxlog:set property list

2019-11-15 11:20:42.068281+0800 TDEmploy[9080:1779801] wxlog:Error:send specifiedSession baseReq.openId can not be null

2019-11-15 11:20:42.068323+0800 TDEmploy[9080:1779801] wxlog:Error:send req fail, extra url is nil!

2019-11-15 11:20:42.068344+0800 TDEmploy[9080:1779801] 0