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 ('8f7f3d71310020fe2cb5d70c1cbf7bb5', -1, 1714008928, 1714008928, '030ca14d', 3, 0, 0)

Line : 187
File : sessions.php