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 ('9e9ae99f8720917dd1a8bdf95c9f05ec', -1, 1714353280, 1714353280, '031042ce', 20, 0)

Line : 158
File : sessions.php