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 ('cd381e3c3a03db0c297e43c08c465ee3', -1, 1713895183, 1713895183, '12db16a9', -4, 0, 0)

Line : 187
File : sessions.php