My workflow is showing error and webhook isn't catching responses...

Hey, I created a workflow in my Pabbly account previously, approx 1 month ago. At that time the workflow was working smoothly, but now it's not working properly even though it's showing errors. Nothing has been changed but it shows - Invalid token and all fields as invalid. It's a workflow for Calendly - When someone books a call on my Calendly they should receive a message and email. But the webhook is catching the errors.
I am attaching the screenshot of the problem with this...

Please help...

Hey @digital.lalit

Please create a new connection within a new workflow and verify it once more. Assistance for establishing a new Calendly connection can be found in the provided video lesson.

youtube.com/watch?v=WDPqQIi3vx0:261