Not unique table/alias: 'tbl_room'
SELECT * FROM (`tbl_booking`) JOIN `tbl_room` ON `tbl_room`.`room_id`=`tbl_booking`.`room_id` JOIN `tbl_room` ON `tbl_room`.`admin_email`='`app`.`che@example`.`com'` WHERE `book_status` = 0
SELECT * FROM tbl_booking JOIN tbl_room ON tbl_room.room_id=tbl_booking.room_id JOIN tbl_room ON tbl_room.admin_email='[email protected]' WHERE book_status = 0