Ios app stay in splashscreen ,can't run,need help

hi

my ios app stayed in splashscreen ,and can’t run ,below is my mobile-config,someong can give me suggestion?thacks very much!

App.setPreference(‘StatusBarOverlaysWebView’, ‘true’);
App.setPreference(‘StatusBarBackgroundColor’, ‘#99ccff’);
App.setPreference(‘BackupWebStorage’,‘local’);
App.setPreference(‘SplashScreenDelay’,“3000”);