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 ('8de0c420b5b0c15ec70bc0d34f0c0f18', -1, 1715264506, 1715264506, '12d90852', 3, 0, 0)

Line : 189
File : sessions.php