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 ('7b99b6a600841c9e31aaa11a773ee4c1', -1, 1713940095, 1713940095, '12bf05ef', -9, 0, 0)

Line : 187
File : sessions.php