We are having a salesforce community enabled for our org and we are running a SOQL to fetch the LastPasswordChangeDate field on the User object on the Portal HomePage Controller Constructor. Whenever we are trying to login to our community, we are getting an exception 
System.QueryException: No such column 'LastPasswordChangeDate' on entity 'User'. If you are attempting to use a custom field, be sure to append the '__c' after the custom field name. Please reference your WSDL or the describe call for the appropriate names

Can anybody help me on this?