$listeners is readonly. $attrs is readonly errors

I am receiving 21 errors like this.

 [Vue warn] $listeners is readonly.

found in

---> <RouterLink>
       <BLink>
         <BNavbar>
           <AppNavigation>
             <App> at src/App.vue
               <Root>

vue.js:597 [Vue warn]: $attrs is readonly.

found in

---> <RouterLink>
       <BLink>
         <BNavbar>
           <AppNavigation>
             <App> at src/App.vue
               <Root>

I think its related to b-navbar calling vue from another source. When i searched it on the net, I found results asking to change webpack.config.js. Can u please tell me where I can find the webpack.config.js file. Also please let me know if this is not the correct solution.

Navingation:

<template>
  <div>
    <b-navbar toggleable="lg" type="dark" variant="dark" fixed="top">
      <b-navbar-brand><router-link to="/" id="ps">Pet-Store</router-link></b-navbar-brand>
           
          <b-navbar-brand><router-link to="/"><img :src=logo id="img"  title="mycompanylogo"></router-link></b-navbar-brand>
          <b-nav-item ><router-link to="/Clinics" id="cl">Clinics</router-link></b-nav-item>
          <b-nav-item><router-link to="/Training" id="tr">Training</router-link></b-nav-item>
          <b-nav-item><router-link to="/Buy-Sell" id="bs">Buy/Sell</router-link></b-nav-item>
          <b-nav-item><router-link to="/Grooming" id="gr"> Grooming</router-link></b-nav-item>
          <b-nav-item><router-link to="/DayCare" id="dc">Day Care</router-link></b-nav-item>
          <b-nav-item><router-link to="/DogWalker" id="dw">Dog Walker</router-link></b-nav-item>
          <b-nav-item v-if="!isLoggedIn"><router-link to="/login" id="si">Sign In</router-link></b-nav-item>
          <b-avatar v-if="isLoggedIn" id="av" variant="light"></b-avatar> 
         <b-nav-item-dropdown v-if="isLoggedIn" :text=user.name right id="log" style="text-decoration:none"> 
          <b-dropdown-item > <b-nav-item v-if="isLoggedIn"><router-link  to="/profile" >My Account</router-link></b-nav-item> </b-dropdown-item>
          <b-dropdown-item > <b-nav-item v-if="isLoggedIn"><a href="" v-on:click.prevent="logoutUser" >Sign out</a></b-nav-item> </b-dropdown-item>
        </b-nav-item-dropdown>
          <b-nav-item><router-link to="/cart"><b-icon icon="cart3" scale="0.75" id="cart-icon"></b-icon></router-link></b-nav-item>
          <p id="item">{{totalItems}}</p>
       
    </b-navbar>
  </div>
</template>

I have attached a screenshot of the errors

screenshot