小程序插件支付功能页调用失败

已按照文档说明配置，还是报 callMiniProgramFunction:fail File not found

因为插件开发，涉及源小程序和插件两个部分，很难提供代码片段，核心内容如下：

小程序中 app.json 已配置 “functionalPages”: true

根目录下建立文件 functional-pages/request-payment.js 如下

exports.beforeRequestPayment = function(paymentArgs, callback) {   wx.login({     success(data) {       wx.request({         method: 'POST',         url: 'https://foo.com/api/login',         data: { code: data.code },         success: function(res) {           wx.request({             method: 'POST',             url: 'https://foo.com/api/order',             data: paymentArgs,             header: { Token: res.data.token },             success: function(res) {               if (res.data.code == 0) {                 callback(null, res.data.data)               } else {                 callback(res.data.message)               }             },             fail: function(res) {               callback(res)             },           })         },         fail: function(res) {           callback(res)         },       })     },     fail: function(res) {       callback(res)     },   }) }

插件中

<functional-page-navigator version="develop"                            name="requestPayment"                            args="{{ { fee: total, paymentArgs: paymentArgs } }}"                            bind:success="paymentSuccess"                            bind:fail="paymentFailed">   <button type="primary">微信支付</button> </functional-page-navigator>