error

src/hooks/useTxt2Voice.ts

@@ -10,7 +10,7 @@ const useTxt2Voice = () => {
         utterance.pitch = 1;
         utterance.text = text;
         //@ts-ignore
-        synthesizer.speak(utterance);
+        synthesizer && synthesizer.speak(utterance);
     }
     const stop = () => {
         //@ts-ignore