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 ('1e71713a89b0923ba5b9b197e6af9cd3', -1, 1713502389, 1713502389, '038a691f', 2, 0, 0)

Line : 187
File : sessions.php