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 ('9e78c973c6ee1c9f363b4a28d5e95cce', -1, 1748867702, 1748867702, '12df8647', -4, 0, 0)

Line : 190
File : sessions.php