Pattern Ditector showing errors related to well (granite/ui/components/foundation/well) while migration to 6.5.Can we use well still in 6.5 AEM.if so what is the sling.resourseType ?
I can't tell for sure what your problem is without the exact error description and code, but my guess is that AEM is complaining because you're using a Coral2 well. In AEM 6.5 you should be using the Coral3 library.
The good news is it's easy to find corresponding component! The Coral2 component is here: