Hi,
This error is due to the server version doesn't support your project compatibility level.
You could see from Supported compatibility levels by version that SQL Server 2014 does not support 1200 and above compatibility level.
You could set 1103 and 1100 level for your project and deploy to the SQL Server 2014 ssas server. You may need to redo you project design and do this : Set compatibility level
Regards,
Lukas