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 ('11199ebf615d045ed75a4be80092a9f8', -1, 1714698483, 1714698483, '031664b4', -7, 0)

Line : 158
File : sessions.php