Main menu don’t hide

Hello, the main menu on the site for some reason is not hidden, gives the following error:
Uncaught TypeError: n.easing [this.easing] is not a function
at init.run (jquery.js? ver = 1.12.4: 4)
at i (jquery.js? ver = 1.12.4: 4)
at Function.n.fx.timer (jquery.js? ver = 1.12.4: 4)
at qb (jquery.js? ver = 1.12.4: 4)
at HTMLUListElement.g (jquery.js? ver = 1.12.4: 4)
at Function.dequeue (jquery.js? ver = 1.12.4: 3)
at HTMLUListElement. <anonymous> (jquery.js? ver = 1.12.4: 3)
at Function.each (jquery.js? ver = 1.12.4: 2)
at a.fn.init.each (jquery.js? ver = 1.12.4: 2)
at a.fn.init.queue (jquery.js? ver = 1.12.4: 3)

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