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Need help with !Wins command on Nightbot

!addcom -cd=5 !wins $(eval a=$(urlfetch json https://twitch.center/customapi/quote/list?token=PUBLIC_TOKEN).match(/~\d+K~/g);a?(b=a.length,c=(+a.map(x=>x.slice(1,x.length-1)).join(,)+)):(b=0,c=``);`$(channel) has ${b} wins ${c})

I continue to get Right-hand side of ‘instanceof’ is not an object response from Nightbot

What is wrong with this formula? All of my other formulas such as !addwin !resetwins all work fine