thank you for your reply. Here is what I see in live logging:
error org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Could not execute JDBC batch update; uncategorized SQLException for SQL [insert into device (version, completed_setup, component_label, component_name, date_created, device_network_id, error_state, firmware_version_id, group_id, handler_version, hub_id, is_component, join_fingerprint_id, label, last_updated, location_id, name, parent_device_id, parent_smart_app_id, previous_handler, previous_zigbee_id, primary_tile_name, profile_id, profile_type, protocol_connection, raw_description, sort_order, type_id, virtual_smart_app_id, zigbee_id, id) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)]; SQL state [HY000]; error code [1366]; (conn=2280269) Incorrect string value: ‘\xF0\x9F\xA6\x81’ for column ‘name’ at row 1; nested exception is java.sql.BatchUpdateException: (conn=2280269) Incorrect string value: ‘\xF0\x9F\xA6\x81’ for column ‘name’ at row 1 @line 360 (createChilDevices)