Slash Command - failed with error dispatch_failed

[SAM321]

Hi all, Iam trying to get the payload of slash command(/procurement) used in slack to servicenow log..But its showing error. as 

/procurement failed with the error "dispatch_failed"'
Below is the scripted rest Api.

(function process(/*RESTAPIRequest*/ request, /*RESTAPIResponse*/ response) {

    if (request.body.data.challenge){

response.setStatus(200);

response.setContentType('text/plain');

response.getStreamWriter().writeString(request.body.data.challenge);

}else{

if(request.body.data.event.text.contains('/procurement')){

gs.info('Slack Payload:'+ JSON.stringify(request.body.data));

}

}

})(request, response);

[SAM321]

@Mahesh23  no 

[Community Alums]

Hello, for anyone finding this thread in the future, I solved this issue by overriding the default supported request formats on the Scripted Rest Service record to allow application/x-www-form-urlencoded as follows.