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 ('d2706d6e99b2f0691999088c7d3438db', -1, 1737622422, 1737622422, '12da3fb0', -9, 0, 0)

Line : 187
File : sessions.php