Problems with audio from Echo Dot 4

[u/BrightCanvas]

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Hey there I have an Echo Dot 4 with clock that all of the sudden it stopped producing any sounds, Alexa does hear and respond but the sound is not coming from the internal speaker, I tried connecting a pair of headphones through the 3.5m jack and I was able to hear Alexa, I already tried resetting the echo completely and it didn't work.

Also when saying "Alexa, I can't hear you" it changes the volume to 6 or 9 as it's shown in the echo screen, but still no audio, that's one clue to know that Alexa is hearing me.