求各位大佬帮忙看一下这个报错是因为什么

昨天玩着好好的，今天突然报错进不去

这是错误代码：

TypeError: undefined is not a function

TypeError: undefined is not a function

    at C:\snapshot\project\obj\generators\RagfairOfferGenerator.js

    at Array.map (<anonymous>)

    at RagfairOfferGenerator.createOffer (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairOfferGenerator.createAndAddFleaOffer (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairOfferGenerator.generateFleaOffersForTrader (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairServer.update (C:\snapshot\project\obj\servers\RagfairServer.js)

    at RagfairServer.load (C:\snapshot\project\obj\servers\RagfairServer.js)

    at RagfairCallbacks.onLoad (C:\snapshot\project\obj\callbacks\RagfairCallbacks.js)

    at App.load (C:\snapshot\project\obj\utils\App.js)

TypeError: undefined is not a function

TypeError: undefined is not a function

    at C:\snapshot\project\obj\generators\RagfairOfferGenerator.js

    at Array.map (<anonymous>)

    at RagfairOfferGenerator.createOffer (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairOfferGenerator.createAndAddFleaOffer (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairOfferGenerator.generateFleaOffersForTrader (C:\snapshot\project\obj\generators\RagfairOfferGenerator.js)

    at RagfairServer.update (C:\snapshot\project\obj\servers\RagfairServer.js)

    at RagfairServer.load (C:\snapshot\project\obj\servers\RagfairServer.js)

    at RagfairCallbacks.onLoad (C:\snapshot\project\obj\callbacks\RagfairCallbacks.js)

    at App.load (C:\snapshot\project\obj\utils\App.js)

这是安装的mod