phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1142 INSERT command denied to user 'horizonm'@'localhost' for table 'phpbb_sessions'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bb001602710310a68451e3d7f8e5d0db', -1, 1547640046, 1547640046, '12cdf6ee', 1, 0, 0)

Line : 173
File : sessions.php