I’ll try to help with the errors you posted…
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look here to see if it helps solve #1: 'Player' AnimationEvent 'NewEvent' has no receiver! Are you missing a component?
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you are creating a mono behaviour with the ‘new’ keyword, it says. You can’t do that, so try to fix that in your code, as the message also mentions.
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you don’t have a ‘vertical’ parameter in your animator. Is it “Vertical” maybe? check the spelling.