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 ('61954b32d0740a5e70fd3a4bc7237d79', -1, 1550670272, 1550670272, '0354f3f6', 14, 0, 0)

Line : 173
File : sessions.php