when i click the button "Create IOU",nothing happend,what's the reason?

[weichenchen1991]

when i visit 'http://localhost:xxxxx/web/example/',the console of brower show error like this:
jquery-3.3.1.min.js:2 Uncaught Error: [$injector:modulerr] http://errors.angularjs.org/1.4.6/$injector/modulerr?p0=demoAppModule&p1=TypeError%3A%20%24qProvider.errorOnUnhandledRejections%20is%20not%20a%20function%0A%20%20%20%20at%20http%3A%2F%2Flocalhost%3A10009%2Fweb%2Fexample%2Fjs%2Fangular-module.js%3A23%3A16%0A%20%20%20%20at%20Object.e%20%5Bas%20invoke%5D%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A39%3A193)%0A%20%20%20%20at%20d%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A37%3A374)%0A%20%20%20%20at%20http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A37%3A498%0A%20%20%20%20at%20m%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A7%3A322)%0A%20%20%20%20at%20g%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A37%3A275)%0A%20%20%20%20at%20fb%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A41%3A35)%0A%20%20%20%20at%20d%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A19%3A463)%0A%20%20%20%20at%20yc%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A20%3A274)%0A%20%20%20%20at%20Xd%20(http%3A%2F%2Fapps.bdimg.com%2Flibs%2Fangular.js%2F1.4.6%2Fangular.min.js%3A19%3A83)
at angular.js:38
at angular.js:4411
at m (angular.js:336)
at g (angular.js:4372)
at fb (angular.js:4297)
at d (angular.js:1657)
at yc (angular.js:1678)
at Xd (angular.js:1572)
at HTMLDocument. (angular.js:28821)
at l (jquery-3.3.1.min.js:2)
and when i click the button "Create IOU",nothing happend,what's the reason?