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 ('3afc0a64aca62f911cb93e86a0398f7b', -1, 1714333682, 1714333682, '12dbbdf7', -8, 0)

Line : 158
File : sessions.php