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Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'GROUP BY QDSLB_IDLP' at line 4 in /home/lp3/web/linhphuong3hotel.com/public_html/configs/dbconnect.class.php:18 Stack trace: #0 /home/lp3/web/linhphuong3hotel.com/public_html/configs/dbconnect.class.php(18): mysqli_query() #1 /home/lp3/web/linhphuong3hotel.com/public_html/models/QuyDinhSoLuongBan.php(23): dbconnect->execute() #2 /home/lp3/web/linhphuong3hotel.com/public_html/book-room.php(90): QuyDinhSoLuongBan->getQuyDinhSLPhongToArray() #3 /home/lp3/web/linhphuong3hotel.com/public_html/index.php(79): include('...') #4 {main} thrown in /home/lp3/web/linhphuong3hotel.com/public_html/configs/dbconnect.class.php on line 18