edit the avatar photos not possible

During the edit process of turning the avatar photo, the picture will not appear anymore, also the selection menu will not appear anymore. Afterwards only the selection appears in the Edit menu: see original. This link leads to the error page 404.
What is the reason for the problem?
Attachments (2)
Attachments can only be downloaded by logged in users

This section can only be seen by users with a valid subscription.
If you have a valid subscription, please login now

Support is

It is currently off working hours and most of us aren't around.

Rest assured that we will get back to your issues as soon as the day starts tomorrow!

Your time
Stack Ideas time