@girish
Someone on the mautic forums mentioned that clearing cache in var/cache
https://forum.mautic.org/t/mautic-5-and-amazon-ses-integration-error/30455
This tutorial mentioned setting some permissions after the install (not sure if that's relevant).
https://joeykeller.com/mautic-5-composer-install-simplified/#:~:text=Part Four%3A Add your email transport
I have also tried both of these but Mautic seems to think the package isn't even install or accessable due to that error message I shared previously.
Not really sure honestly if this is a Mautic issue or a Cloudron issue. Maybe it's permissions related? I'm not very knowledgable with this, sorry.