update

client/app/composables/use-preferences.ts

@@ -16,14 +16,24 @@ export const usePreferences = createGlobalState(() => {
     audioOutputs,
   } = useDevicesList()
 
+  const inputDeviceExist = computed(() => {
+    return audioInputs.value.some(device => device.deviceId === inputDeviceId.value)
+  })
+
+  const outputDeviceExist = computed(() => {
+    return audioOutputs.value.some(device => device.deviceId === outputDeviceId.value)
+  })
+
   return {
     inputDeviceId,
     outputDeviceId,
     autoGainControl,
     noiseSuppression,
     echoCancellation,
-    videoInputs,
-    audioInputs,
-    audioOutputs,
+    inputDeviceExist,
+    outputDeviceExist,
+    videoInputs: computed(() => JSON.parse(JSON.stringify(videoInputs.value))),
+    audioInputs: computed(() => JSON.parse(JSON.stringify(audioInputs.value))),
+    audioOutputs: computed(() => JSON.parse(JSON.stringify(audioOutputs.value))),
   }
 })