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 ('c0a4b2b897895d4d335ee030f66ea28d', -1, 1713269819, 1713269819, '0311064b', -4, 0, 0)

Line : 187
File : sessions.php