I am getting this error while using hooks.

This is related code.
const market = useContext(MarketContext);
useEffect(() => {
nav.items[1] = {
name: 'Market',
url: '/market',
icon: 'icon-speedometer',
badge: {
variant: market == "Live" ? "primary" : "secondary",
text: market,
}
};
}, market)
I am getting this error while using hooks.

This is related code.
const market = useContext(MarketContext);useEffect(() => {}, market)