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 ('a40b1ef0c1fabfa46b89c7ac035b0d70', -1, 1715014453, 1715014453, '038cff96', 2, 0, 0)

Line : 189
File : sessions.php