When I use embellish dry report to create a new report, I already fill in all information, but click ok has been this error,

This is grammar shows the SQL statement:
SELECT demand purchase_id, demand requirement_id, demand the total_amount * demand in unit_price as total amount FROM demand WHERE demand. Purchase_id is not null

Error sources: You have an error in your SQL syntax; Check the manual that corresponds to your MySQL server version for the right syntax to use near 'OPTION SQL_SELECT_LIMIT=DEFAULT' at line 1

Could it be that the data source are not configured? But the data source is show that the connection is successful,