//server.js

const nodeJWT = require('node-jwk');
const njwt = require('njwt');

app.get('/cypress-auth', (req, res) => {
  const config = JSON.parse(fs.readFileSync(process.env.CYPRESS_CONFIG_FILEPATH, 'utf8'));
  const keySet = nodeJWT.JWKSet.fromObject(config.keySet);
  const jwk = keySet.findKeyById(config.kid);
  // console.log(keySet)
  const keyPEM = jwk.key.toPublicKeyPEM();
  const jwt = njwt.create(config.claims, keyPEM, jwk.alg);
  res.json({ access_token: jwt.compact() });
});

Error: error:0906D06C:PEM routines:PEM_read_bio:no start line
    at Sign.sign (internal/crypto/sig.js:85:26)
    at Jwt.sign (/Users/.../project_root/node_modules/njwt/index.js:228:63)
    at Jwt.compact (/Users/.../project_root/node_modules/njwt/index.js:250:29)