Zapier platform cli: ENOENT: no such file or directory error

Question

I am using Zapier platform cli to write a customised 'Create' aka Action. When I try to provide the path for big query service account key, I get the following error - ENOENT: no such file or directory, open '/var/task/creates/key.json'

const options = {
    keyFilename: 'creates/key.json',
    projectId: 'test',
  };

const bigqueryClient = new BigQuery(options);

Can anyone help me please?

I tried to provide the json key directly in the keyFilename