In my published app, why show this Webhook deliveries faild messages , what does it mean, and why it happened and how to solve this problem?

Please help me
Thanks
A developer is experiencing an 80% failure rate for webhook deliveries in their published Shopify app. They’ve shared a screenshot showing the failed delivery metrics. The developer is seeking help to understand:
No responses or solutions have been provided yet, leaving the issue unresolved and the discussion open for community assistance.
In my published app, why show this Webhook deliveries faild messages , what does it mean, and why it happened and how to solve this problem?

Please help me
Thanks