Optifine Cape Editor does not open?

Su
- in Skins
2

When I go to Settings - Skin Customizations - Optifine Cloak in Minecraft, and then click Cloak Editor, it says "The Optifine editor should open in a web browser window." But no window opens!

Why not?

ab
-2

Then you have to go to the Optifine page, log in and open the editor manually, or you can restart Minecraft.

Gu
-1

no reload it!