Okay Im pissed already damn,
This slot thing is not working properly dont know why,
At first it was working then when the app is restarted it got being destroy dont know, this is not happening when using Plian VueJS
So here the thing the
activeIndex is come and out, dont know why
Also I guessing Im using it properly, it was working, Yes it was, but when running ionic server or sort of refreshing the web browser in a hard way, there is an error will occur.