My Minecraft Skins tab is showing an unexpected error? (WebGL)

My Minecraft Launcher "Skins" requests that my computer has WebGL support. Although this tab working for as long as the Minecraft Launcher has been updated to the current update, this is the first time I've seen this error.

I am aware that I can use the Minecraft.net browsers skin changer, but I would prefer to use the Minecraft Launchers skin changer.