Shared folder not visible in ubuntu on VMware workstation

Problem:

I have shared an directory from windows host to ubuntu which is running on vmware workstation 15. But shared directory is not visible to mount path /mnt/hgfs.

Sqldeveloper Connection import failed with error oracle.jdevimpl.db.adapter.DatabaseProviderFactory1212

Problem:
Import connections.xml from 12c to 11g environment throws error “Missing class: oracle.jdevimpl.db.adapter.DatabaseProviderFactory1212”