OpenGraph image is not functioning properly

[mugoosse]

OpenGraph support is set up here, yet the image is not loading properly when sharing https://helium-network-explorer.herokuapp.com in messaging platforms:

On the other hand, the /og.png file that it's linking to is actually available: https://helium-network-explorer.herokuapp.com/og.png

Not sure what needs to change here to fix it but that's why this issue was created.

[riobah]

can it be an issue of Discord, as I see similar issue for other explorers too sometimes