{"code":5202,"msg":"Missing param.","data":null}

根据提供的引用内容，{"code":5202,"msg":"Missing param.","data":null}是一个JSON串，其中包含了一个错误代码(code)为5202，错误信息(msg)为"Missing param."，以及数据为空(data为null)的信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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