Add workaround for getCapabilities not exists

Author: sciuridae0603

src/components/QRScanner.vue

@@ -20,11 +20,8 @@
 </template>
 
 <script>
-import { QrcodeStream } from 'vue-qrcode-reader'
-
 export default {
   name: 'QRScanner',
-  components: { QrcodeStream },
   props: {
     title: {
       type: String,

src/main.js

@@ -4,8 +4,14 @@ import router from './router'
 import Components from './components'
 import i18n from './i18n'
 import store from './store'
+import VueQrcodeReader from 'vue-qrcode-reader'
 
 Vue.config.productionTip = false
+Vue.use(VueQrcodeReader)
+
+if (!MediaStreamTrack.prototype.getCapabilities) {
+  MediaStreamTrack.prototype.getCapabilities = () => {}
+}
 
 Object.keys(Components).forEach(key => {
   Vue.component(key, Components[key])