I am unable to hear alexa's responce to my questions

I am unable to hear alexa's responce to my questions
I just set up my dot about a week ago. It was working fine as far as we were able to hear Alexa's response. However I just noticed that we are not able to hear it but the light does turn on and if I open my app on my phone I see my question and response. I have re-connected my wifi as well and still no luck.

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