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 ('91ccd0f5d1c6aca6f281826e37c63a19', -1, 1737555739, 1737555739, '03901e0e', -9, 0, 0)

Line : 187
File : sessions.php