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 ('9ad0b98e9f64327a4b6fb54e01ff1571', -1, 1737659974, 1737659974, '0385743b', 3, 0, 0)

Line : 187
File : sessions.php