Outlook Email Poller

For more info, while checking the logs, I get this message:

Failed to enable Plug-in 'Outlook Email Poller' (com.vuram.emailpoller) version 1.4.6: 'There was a problem loading the descriptor for module 'PollOutlookEmail' in plugin 'Outlook Email Poller'.
 Error retrieving dependency of class: com.vuram.emailpoller.PollEmailFromGraphAPI. Missing class: ContentService'

Thanks in advance!

I'm trying to install the plugin, but it's giving me this error while doing so on the admin console 

Any way to fix it and install the plugin?

• Security patch updated

• Smart service for delegated service account now supports shared mailboxes.

• Smart service for delegated service account
• Skip Messages that could not be processed
• Improved Error Handling

• Automatic Sequence Creation For Oracle
• Table Names and Sequences created in oracle naming conventions similar to CDT for easier reference
• Performance Improvements

• Added Smart Service For Oracle Support
• Synchronisation at emailId,Folder Name Level
• Custom Folders other than Inbox can be Polled
• Email Also created as an eml document in Appian
• Added a new column to the existing table.

• Added two new smart services to support Secure Credential
• Storage for email credentials. Use clientid,tenantid and clientsecret as field keys to the SCS/Third party Credentials.

I would like to use this plug-in and I have some questions ...
Does this work with Appian Cloud?
Is there an SQL script to create the table (the download contains only a jar)?

My comments...
The parameters documented here do not match those of the smart service.
* "Is HTML Body" is not present in the service. Can I just add it manually?
* The service (dynamic version) contains "Enable Clean", "Ignore Clean Characters" and "Table Name"

• Added MariaDB support