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 ('a5fdf7d31987559f70e78eefca9e31fe', -1, 1714004569, 1714004569, '12bf2e24', -1, 0, 0)

Line : 187
File : sessions.php