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 ('7f31ce6ae5873fa23c5fe0f3c1cf9c85', -1, 1713415615, 1713415615, '12df6b7c', -2, 0, 0)

Line : 187
File : sessions.php