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 ('d982f811145ba927f4389e291745b397', -1, 1714621886, 1714621886, '1276a662', -50, 0, 0)

Line : 187
File : sessions.php