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 ('404e94de0f5292397fa6a3069f0b2949', -1, 1714831335, 1714831335, '030feb68', -2, 0, 0)

Line : 187
File : sessions.php