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 ('03f9dcfef0d04d4882214e2ab0018d64', -1, 1715111774, 1715111774, '12df7cf4', 2, 0, 0)

Line : 189
File : sessions.php