The VAPID public key seems to be invalid:

I am getting an error in console that Vapid public key is invalid

The VAPID public key seems to be invalid: BM1dkKuoFxsnlOup6xMeaBiHV85JaACkEaT6FtQZIHgohBpXjAdyTMzawp8tBZz-saa9uygApmSd7h-JkU$

Your key contains invalid characters, please generate new set of keys.