phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ef2bf06716f3b4c5320d376d6c60edc5', -1, 1713552885, 1713552885, '03805eab', -2, 0, 0)

Line : 187
File : sessions.php