编辑器报错，然后整个scene的层级管理器节点都消失了。。。报错如下，现在我整个工程都编辑不了了，请问有没有人知道是什么问题？
ReferenceError: _ is not defined
at o.doReport (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\page\scene-utils\missing-object-reporter.js:1:484) at t.walkProperties (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\page\scene-utils\missing-object-reporter.js:1:1760) at o.walk (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:2037) at o.parseCCClass (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1033) at o.parseObject (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:878) at a (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1799) at n.iteratee (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1989) at n.walk (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1571) at n.o.parseCCClass (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1033) at n.o.parseObject (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:878) at n.walk (E:\cocoscreator\CocosCreator2\resources\app.asar\editor\share\engine-extends\object-walker.js:1:1678)
