JwksClient is throwing error when called using non-hardcoded URI options

[sathyarajagopal]

The below code works
const clientAlt = jwksClient({ jwksUri: 'https:///<jwks_endpoint>' }); whereas the below doesn't const client = jwksClient({ jwksUri: constants.URLS.OIDC_JWKS_URL });

As you can see the only difference is in the second one, I am reading the URL from a constants variable instead of hardcoding it. Can you help?