phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('021ae964b22dec7e1f3fe64d8dff392c', -1, 1714777611, 1714777611, '038dca36', 12, 0)

Line : 158
File : sessions.php