Error with calling rest api from node backend and parsing the response using spin in Javascript.

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I am new to Camunda and creating one poc for: communication between NodeJs REST api to Camunda process.

Referred "Get started with Camunda and BPMN 2.0" guide at Camunda docs and created simple process and deployed process on Camunda 7.4.

Also, referred https://github.com/camunda/camunda-bpm-examples/tree/master/servicetask/rest-service example to call rest api.

My problem is whenever I try to start the process, it fails with showing error.

I used Javascript spin function "S" to parse the response REST Api, but not sure why, at line of S(response) it is failing.

When I comment that line process get started. I checked any configuration missing those looks correct to me.

What could be the reason?