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 ('24004057f17d9a24ad9f3fea0a787f2d', -1, 1713460010, 1713460010, '0391baad', 3, 0, 0)

Line : 187
File : sessions.php