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 ('a7228fa47f408ce84359218934e7a568', -1, 1713883108, 1713883108, '038a7d02', 2, 0, 0)

Line : 187
File : sessions.php