Connection timedout error in heroku?

I am getting this error in my Wappler project which is deployed to heroku. Project is working fine in localhost.

"status": "500",
"code": "ETIMEDOUT",
"message": "connect ETIMEDOUT",
"stack": "Error: connect ETIMEDOUT\n    at Connection._handleTimeoutError

Also, I had recently changed all of my database connection of server actions to a digital ocean database.

Is there a solution for this ?