phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1ed1c0d9c47d4c05c116db8f135f22f9', -1, 1715316414, 1715316414, '0315e7f5', -6, 0, 0)

Line : 189
File : sessions.php