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 ('4ac1997f0f5c7b5f4a7aeb45ab5b7fb1', -1, 1714036054, 1714036054, '127424c0', -11, 0, 0)

Line : 187
File : sessions.php