phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c8bef0bfb89a70c274a62c63d01b1e2f', -1, 1743843828, 1743843828, '12bf32cb', 2, 0, 0)

Line : 187
File : sessions.php