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 ('ba7a3d18a0763b1f44f893efcbbdbcea', -1, 1737633693, 1737633693, '12777e48', 6, 0, 0)

Line : 187
File : sessions.php