[{"employee_id":"EMP001","error":"could not execute statement [ERROR: null value in column \"created_at\" of relation \"user_roles\" violates not-null constraint\n  Detail: Failing row contains (9c3f74da-a82e-4767-ba51-4d3c72f9afde, aac65864-1100-49c9-84df-95340403ceb7, learner, null, null).] [insert into user_roles (created_at,department_id,role,user_id,id) values (?,?,?,?,?)]; SQL [insert into user_roles (created_at,department_id,role,user_id,id) values (?,?,?,?,?)]; constraint [created_at\" of relation \"user_roles]","email":"newuser@example.com"}]