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 ('a4f27a8e5dc5f5f1f19c216af9bf2fa4', -1, 1715005976, 1715005976, '0390568a', 3, 0, 0)

Line : 189
File : sessions.php