有时候会出现 这个报错 是为什么

[lovezm]

SyntaxError: Unexpected token , in JSON at position 124
at JSON.parse ()
at parse (C:\Users\Administrator\Desktop\bilibili\node_modules\body-parser\lib\types\json.js:89:19)
at C:\Users\Administrator\Desktop\bilibili\node_modules\body-parser\lib\read.js:121:18
at invokeCallback (C:\Users\Administrator\Desktop\bilibili\node_modules\raw-body\index.js:224:16)
at done (C:\Users\Administrator\Desktop\bilibili\node_modules\raw-body\index.js:213:7)
at IncomingMessage.onEnd (C:\Users\Administrator\Desktop\bilibili\node_modules\raw-body\index.js:273:7)
at IncomingMessage.emit (events.js:314:20)
at endReadableNT (_stream_readable.js:1244:12)
at processTicksAndRejections (internal/process/task_queues.js:80:21)

[lkeme]

提交参数有问题