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 ('6f868a46e736c934f1eaec4c061fbeb9', -1, 1737484060, 1737484060, '12de76bc', -9, 0, 0)

Line : 187
File : sessions.php