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) VALUES ('356ba8ae9df1d67ec29aeb54d2f9639c', -1, 1714666735, 1714666735, '12da465d', -7, 0)

Line : 158
File : sessions.php