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 ('c5f02772f68e461e0ae180e4acf3238f', -1, 1713970088, 1713970088, '0315e7f5', -2, 0, 0)

Line : 187
File : sessions.php