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 ('3d350a5d57a80eb3f5c8e7b923ba1e7b', -1, 1714039594, 1714039594, '0395ea8d', -1, 0, 0)

Line : 187
File : sessions.php