In in the Changelog for the Update 1.21.5 from Minecraft: Java Edition (Minecraft Java Edition 1.21.5 | Minecraft) is a link to an non-existing page. The link ist the full-size image from the second image.
Comments 2
Please confirm if this is still an issue for you. https://www.minecraft.net/en-us/article/minecraft-java-edition-1-21-5 this page loads correctly for me.
If this is still an issue, please elobrate on what the issue is.
The wrong current URL is https://minecraftnetassets.z13.web.core.windows.net/minecraft-net-assets-container/name.png
The correct URL would be https://minecraftnetassets.z13.web.core.windows.net/minecraft-net-assets-container/1.21.5_pig-desert.png