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, session_admin) VALUES ('3a708123b7a1ec404df8854c5f4f91ad', -1, 1714041660, 1714041660, '12bfdf7b', 2, 0, 0)

Line : 187
File : sessions.php