请问chrom报这个错是什么原因呢？

Question

编译文件之后打开网页报错，看不懂报的错是什么。。可以帮我看一下吗?Uncaught ReferenceError: json is not definedat eval (eval at returnFilter (projectProposal.js:3), <anonymous>:1:1)at Object.returnFilter (projectProposal.js:3)at Object.parse (projectProposal.js:3)at Object.query (projectProposal.js:2)at Object.success (projectProposal.js:17)at i (projectProposal-dependency.min.js:41)at Object.fireWith [as resolveWith] (projectProposal-dependency.min.js:41)at y (projectProposal-dependency.min.js:43)at XMLHttpRequest.c (projectProposal-dependency.min.js:43)