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 …

Which option have you chosen for upload storage?

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

Error al subir avatar y fotos

supermathie (Michael Brown) 3 Junio, 2026 16:01 2

¿Qué opción has elegido para el almacenamiento de carga?

Tema		Respuestas	Vistas
User cannot use custom avatar with Amazon S3 Bug	41	6811	21 Marzo 2015
User uploaded avatar images showing up blank after update Support	2	579	9 Diciembre 2021
Avatar uploads broken on subfolder installs? Bug	18	1788	30 Octubre 2018
Uploaded figures dont show Self-hosting	5	1253	22 Julio 2015
Avatar upload failing Bug	14	1558	10 Septiembre 2018