用的win10系统开发，在初始页面OnLoad方法里面调用一个接口getOpenId，在微信开发者工具正常，真机调式也正常，但是体验版不能正常调用，报的是：MiniProgramError

o.getOpenId(...).then is not a function

TypeError: o.getOpenId(...).then is not a function

at et.onLoad (app-service.js:1234:312)

at et.<anonymous> (WASubContext.js:2:2110463)

at et.p.__callPageLifeTime__ (WASubContext.js:2:2110208)

at xt (WASubContext.js:2:2125908)

at at (WASubContext.js:2:2130292)

at Mt (WASubContext.js:2:2130399)

at Function.<anonymous> (WASubContext.js:2:2138943)

at i.<anonymous> (WASubContext.js:2:2101152)

at i.emit (WASubContext.js:2:536604)

at Object.emit (WASubContext.js:2:495330)