I don’t know why I cannot upload attachments, such as photos after a successful Discourse Docker installation. And If I choose an avatar at Discourse ID before I log in a new account, the avatar can be displayed correctly. When I try to later on change a avatar, it fails again. I want to know how to fix this issue. Will I have to set a amazon SC3 to prevent it happen again?

Which option have you chosen for upload storage?

Local Storage Finally it resolved because I found the issue is on CDN Cloudflare,

Échec du téléchargement de l'avatar et des photos

supermathie (Michael Brown) Juin 3, 2026, 4:01 2

Quelle option avez-vous choisie pour le stockage des téléversements ?

Sujet		Réponses	Vues
User cannot use custom avatar with Amazon S3 Bug	41	7205	Mars 21, 2015
User uploaded avatar images showing up blank after update Product Support	2	625	Décembre 9, 2021
Avatar uploads broken on subfolder installs? Bug	18	1906	Octobre 30, 2018
Uploaded figures dont show Self-hosting	5	1333	Juillet 22, 2015
Avatar upload failing Bug	14	1710	Septembre 10, 2018