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 ('d6b4ecf1f47179b546e1c8202a5cc6b2', -1, 1730419512, 1730419512, '12d98d34', -1, 0, 0)

Line : 195
File : sessions.php