Getting 403 in response of a Generic webhook, Jenkins job is not getting triggered

I am using a generic webhook to trigger my Jenkins job, earlier it was working and I was able to invoke the build on push action on my git repo.
I am using below webhook url at git side and provided the tokenName at Jenkins job side.

https://domai-url/generic-webhook-trigger/invoke?token=tokenName

There was below warning message in webhook

  • Due to an incident, webhooks were not delivered from 2021-03-18 15:15:00 to 2021-03-18 16:20:00

And I am seeing 403 in Response with below Body

403 Forbidden

403 Forbidden

my content type for the webhook is application/json type.
Can anybody help on this to solve if have faced the same issue for generic webhhok.
Appreciate your help.