My espresso machine seems to be burning the espresso,Whats wrong?

Saeco Aroma espresso machine - It was not that old i am using it for almost a year.
December 11, 2007 1:58pm CST
I have a Saeco Aroma espresso machine which up until last week has been great. Now it seems to be burning the espresso, I can smell a burned scent when it is heating and then when the espresso comes out it tastes terrible and burned. how can I fix this? Does anyone know what is wrong with my machine?
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