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 ('c8f0f9a19d4abc369a8c2fa11b2b2ab9', -1, 1713531127, 1713531127, '038a76fa', -10, 0, 0)

Line : 187
File : sessions.php