Could login Aras, but could get data from database.

Hello, I am new to Aras, I have finished installation, and installed language package. could use account "root" and password "innovator" to login. but couldn't get any data from database. and when click "create a new item", will jump out this error message. but I could add new data to SQL database, but couldn't find it in aras interface. Because when I check SQL data from SQL interface, I could see what I have input.