unable to get local issuer certificate

[airbone42]

Hi,

I'm trying to use this handy package, but always end up with following certificate error. As the data is anyway not sensitive, is it possible to bypass the certificate-check?

{ FetchError: request to https://eu-api.coolkit.cc:8080/api/user/login failed, reason: unable to get local issuer certificate
    at ClientRequest.<anonymous> (/openhab/userdata/scripts/watertemperature/node_modules/node-fetch/lib/index.js:1455:11)
    at ClientRequest.emit (events.js:198:13)
    at TLSSocket.socketErrorListener (_http_client.js:401:9)
    at TLSSocket.emit (events.js:198:13)
    at emitErrorNT (internal/streams/destroy.js:91:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
    at process._tickCallback (internal/process/next_tick.js:63:19)
  message:
   'request to https://eu-api.coolkit.cc:8080/api/user/login failed, reason: unable to get local issuer certificate',
  type: 'system',
  errno: 'UNABLE_TO_GET_ISSUER_CERT_LOCALLY',
  code: 'UNABLE_TO_GET_ISSUER_CERT_LOCALLY' }