Problem with steam inventory.

I have problem browsing trough steam Path of Exile inventory.
I did reach out to steam support and they asked me to contact GGG support.
Then GGG support told me to post here.

I am attaching image of the problem.
I tried that on 2 different days, restarting my pc and steam several times trough the day. Any help? Any idea what can i do? Or you are able to help?

Steam link: https://steamcommunity.com/id/kedor/inventory#238960
Error image: