After the conversion by utilizing Remote Blob Storage, this database exceeds the maximum possible size (4 GB file size) that ...

After the conversion by utilizing Remote Blob Storage, this database exceeds the maximum possible size (4 GB file size) that can be successfully attached to a SQL Express instance. This database must be attached to either a Standard or an Enterprise edition SQL instance, or must be reduced in size by migrating or deleting content out of the content database before attempting conversion again.