Why wasn't Diogo Jota sent off against Tottenham?

Why Diogo Jota wasn't sent off after kicking Oliver Skipp in the head during Liverpool's bonkers 4-3 Premier League victory over Tottenham.

Ryan Mason had been flung around several loops of an emotional rollercoaster by the time Diogo Jota and Oliver Skipp clashed in the 80th minute.
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Source : 90min