为何会报错

Uncaught SyntaxError: Unexpected token c in JSON at position 1
    at JSON.parse (<anonymous>)
    at HTMLDocument.<anonymous> (VM6926:64)
    at l (jquery-1.8.3.min.js:2)
    at Object.fireWith [as resolveWith] (jquery-1.8.3.min.js:2)
    at Function.ready (jquery-1.8.3.min.js:2)
    at HTMLDocument.A (jquery-1.8.3.min.js:2)

原来是json数据的问题