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 ('8018e4c4ce99e87f1e1ebb8877a07bff', -1, 1713879696, 1713879696, '03eeebf8', -2, 0, 0)

Line : 187
File : sessions.php