phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e3ec3bf5b92c2180a4ec675ce0deb9f4', -1, 1714517527, 1714517527, '12776f09', -8, 0, 0)

Line : 187
File : sessions.php