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 ('0a13c6690f784b947fab7b44d1ba107d', -1, 1713568171, 1713568171, '03859357', -9, 0, 0)

Line : 187
File : sessions.php