Issue when double importing the same page in parent components

[MattiaFailla]

Hello. When I try to import the component Animations.vue both in Home.vue and Menu.vue something strange happens: if I, for example, try to Import the component Dialogs.vue in Animations.vue and I try to push I'll get this error:

vue.esm.js?efeb:571 [Vue warn]: Failed to mount component: template or render function not defined.

found in

---> <Anonymous>
       <VOnsNavigator>
         <AppNavigator> at /home/mat/Progetti/app-farmaceutica-client/src/AppNavigator.vue
           <Root>
warn @ vue.esm.js?efeb:571
mountComponent @ vue.esm.js?efeb:2671
Vue$3.$mount @ vue.esm.js?efeb:8259
Vue$3.$mount @ vue.esm.js?efeb:10594
init @ vue.esm.js?efeb:4007
createComponent @ vue.esm.js?efeb:5446
createElm @ vue.esm.js?efeb:5382
addVnodes @ vue.esm.js?efeb:5570
updateChildren @ vue.esm.js?efeb:5700
patchVnode @ vue.esm.js?efeb:5756
patch @ vue.esm.js?efeb:5905
Vue._update @ vue.esm.js?efeb:2583
updateComponent @ vue.esm.js?efeb:2701
get @ vue.esm.js?efeb:3044
run @ vue.esm.js?efeb:3121
flushSchedulerQueue @ vue.esm.js?efeb:2887
eval @ vue.esm.js?efeb:1789
flushCallbacks @ vue.esm.js?efeb:1710
Promise.then (async)
microTimerFunc @ vue.esm.js?efeb:1758
nextTick @ vue.esm.js?efeb:1802
queueWatcher @ vue.esm.js?efeb:2974
update @ vue.esm.js?efeb:3111
notify @ vue.esm.js?efeb:677
mutator @ vue.esm.js?efeb:833
push @ store.js?a259:12
wrappedMutationHandler @ vuex.esm.js?358c:697
commitIterator @ vuex.esm.js?358c:389
eval @ vuex.esm.js?358c:388
_withCommit @ vuex.esm.js?358c:495
commit @ vuex.esm.js?358c:387
boundCommit @ vuex.esm.js?358c:335
push @ RequestSelectCompany.vue?fb4c:113
boundFn @ vue.esm.js?efeb:185
eval @ RequestSelectCompany.vue?fb4c:94
Promise.then (async)
saveRequest @ RequestSelectCompany.vue?fb4c:77
boundFn @ vue.esm.js?efeb:185
click @ RequestSelectCompany.vue?1516:20
invoker @ vue.esm.js?efeb:1943
fn._withTask.fn._withTask @ vue.esm.js?efeb:1778
vue.esm.js?efeb:571 [Vue warn]: Error in updated hook: "TypeError: Cannot set property 'visibility' of undefined"

found in

---> <VOnsNavigator>
       <AppNavigator> at /home/mat/Progetti/app-farmaceutica-client/src/AppNavigator.vue
         <Root>
warn @ vue.esm.js?efeb:571
logError @ vue.esm.js?efeb:1689
globalHandleError @ vue.esm.js?efeb:1684
handleError @ vue.esm.js?efeb:1673
callHook @ vue.esm.js?efeb:2830
callUpdatedHooks @ vue.esm.js?efeb:2928
flushSchedulerQueue @ vue.esm.js?efeb:2913
eval @ vue.esm.js?efeb:1789
flushCallbacks @ vue.esm.js?efeb:1710
Promise.then (async)
microTimerFunc @ vue.esm.js?efeb:1758
nextTick @ vue.esm.js?efeb:1802
queueWatcher @ vue.esm.js?efeb:2974
update @ vue.esm.js?efeb:3111
notify @ vue.esm.js?efeb:677
mutator @ vue.esm.js?efeb:833
push @ store.js?a259:12
wrappedMutationHandler @ vuex.esm.js?358c:697
commitIterator @ vuex.esm.js?358c:389
eval @ vuex.esm.js?358c:388
_withCommit @ vuex.esm.js?358c:495
commit @ vuex.esm.js?358c:387
boundCommit @ vuex.esm.js?358c:335
push @ RequestSelectCompany.vue?fb4c:113
boundFn @ vue.esm.js?efeb:185
eval @ RequestSelectCompany.vue?fb4c:94
Promise.then (async)
saveRequest @ RequestSelectCompany.vue?fb4c:77
boundFn @ vue.esm.js?efeb:185
click @ RequestSelectCompany.vue?1516:20
invoker @ vue.esm.js?efeb:1943
fn._withTask.fn._withTask @ vue.esm.js?efeb:1778
vue.esm.js?efeb:1693 TypeError: Cannot set property 'visibility' of undefined
    at eval (vue-onsenui.js?10e5:1106)
    at VueComponent._eachPage (vue-onsenui.js?10e5:1070)
    at VueComponent.boundFn [as _eachPage] (vue.esm.js?efeb:185)
    at VueComponent._animate (vue-onsenui.js?10e5:1105)
    at VueComponent.boundFn [as _animate] (vue.esm.js?efeb:186)
    at VueComponent.updated (vue-onsenui.js?10e5:1187)
    at callHook (vue.esm.js?efeb:2828)
    at callUpdatedHooks (vue.esm.js?efeb:2928)
    at flushSchedulerQueue (vue.esm.js?efeb:2913)
    at Array.eval (vue.esm.js?efeb:1789)

Where am I wrong?