Error in Cancel download process !

Hi , thanks for the awesome library .
I am using this library last 2 month ...its really awesome thanks for maintaining this .
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I have an issue in cancel download process . I an cancelling download process by jobId created on download begin callback first time . by the following code .

RNFS.stopDownload(jobId).then((res)=>
{
console.log("Download Cancelled : "+JSON.stringify(res))
})
.catch((res)=>
{
console.log("Error : "+res)
})

But some error display in this method . Please suggest me ...is am i doing something wrong in logic ?? Please help

Here is the screenshot