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 ('77da63620c5a12e508fd2cb5a9d5200b', -1, 1713905153, 1713905153, '030fbe90', -7, 0, 0)

Line : 187
File : sessions.php