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 ('d5aa69a21c87573bc782eb5b60509d38', -1, 1713550934, 1713550934, '0390ac73', -7, 0, 0)

Line : 187
File : sessions.php