Ionic MenuController get evaluating 'this.menuInnerEl.offsetWidth' on ios

I use the MenuController on the Ionic project Sometimes I got the error error TypeError: undefined is not an object (evaluating 'this.menuInnerEl.offsetWidth') this error make my iOS app freezes (working no problem on Android) anyone know about this error please help?

Ionic:

   Ionic CLI                     : 6.4.0 (/usr/local/lib/node_modules/@ionic/cli)
   Ionic Framework               : @ionic/angular 5.5.2
   @angular-devkit/build-angular : 0.1100.7
   @angular-devkit/schematics    : 10.2.1
   @angular/cli                  : 10.2.1
   @ionic/angular-toolkit        : 3.0.0