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 ('2619802d2b64434a50c1f5f69000e784', -1, 1713469919, 1713469919, '1276c1e8', -4, 0, 0)

Line : 187
File : sessions.php