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 ('5793e4fc32439e4deb9d40780596feba', -1, 1713451150, 1713451150, '0316f8d0', -4, 0, 0)

Line : 187
File : sessions.php