在开工工具中调试正常，真机调试正常，在预览和体验版小程序中操作提示如下异常信息，并且无法解析\n换行，前者一切正常

MiniProgramError

X(...).bem is not a function

TypeError: X(...).bem is not a function

at (appservice.app.js:312:32276)

at (common.app.js:1:30767)

at (appservice.app.js:312:32042)

at t.handleChildrenCreation (common.app.js:1:30528)

at (common.app.js:1:30938)

at Object.C (appservice.app.js:312:32018)

at (@vant/weapp/popup/index.appservice.js:1:1149)

at t.handleChildrenCreation (common.app.js:1:30528)

at (common.app.js:1:31877)

at C (@vant/weapp/popup/index.appservice.js:1:1058)