@Bhuwan_B @arunpatidar  I have tried debugging it, but no luck. I see the manifest has the sling model package been exposed, the same code is working fine in other environments.

Yeah I checked there, I dont see any errors specific to the bundles.

Yeah I checked there, I dont see them registered. This is happening only in one of the author.

Hi Folks,We are facing a weird issue, suddenly in one of the aem instance, sling models are not getting registered. Where as the same code/package is showing up sling models registered properly in other instances.  There was not changes in code or pom file where the sling model package is declared. ...