uni.$u.http 打包app时报错，用的是vue3和uview-plus

reportJSException >>>> exception function:createInstanceContext, exception:white screen cause create instanceContext failed,check js stack ->Uncaught TypeError: Cannot destructure property 'http' of 'uni.$u' as it is undefined.
at (app-service.js:6965:11)
at (app-service.js:14840:3)

这个问题怎么解决呀，救救我