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 ('e2ae2dde8930d9af952856c82bc11a1f', -1, 1714016701, 1714016701, '12777d07', 0, 0, 0)

Line : 187
File : sessions.php