Why node-rfc package is not working in NestJS but it works in Fastify?

Question

I got this error:

 {
  name: 'RfcLibError',
  group: 5,
  code: 20,
  codeString: 'RFC_INVALID_PARAMETER',
  key: 'RFC_INVALID_PARAMETER',
  message: 'Parameter ASHOST, GWHOST, MSHOST or PORT is missing.'
}

I was trying get SAP data using rfc-node in NestJS project. I am adding sapnwrfc.ini file also with parameters of RFC_TRACE,DEST,USER,PASSWD,ASHOST,SYSNR,CLIENT,LANG. Eventhough I added all these parameters I got the above error. But this same I used in the fastify code, it works correctly. Please help me to fix this.