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 ('f45b6f47ee0f876511b59cc00b55818e', -1, 1713552135, 1713552135, '03907ce8', -4, 0, 0)

Line : 187
File : sessions.php