Lambda Smartapp Installation Error while Configuring

I have created a SmartApp using AWS Lambda , but after I install it, in the initial configuration it is giving an error in the Live logger shown below and gets uninstalled on its own. It is showing closestRegionNotFound error, for which I changed the region of my lambda function to the nearest region. Still same error. Please help
Thanks in advance.

I’m curious if this resolved itself? I have seen some mention of this issue elsewhere having been resolved automatically.