CosPotato

I deleted the `minecraft` folder completely and re-installed the Minecraft again. The problem solved! I have both `1.9 with forge` and `1.12 with forge`. Maybe this is the reason. Thank for your help!

I was use the installer. I even re-installed the Minecraft, but no use.

I was re-runed several times, but i always get this error

I'm using the official launcher. By the way, launcher throw out some '[Warn] get xxx.jar.sha1 error: HTTP 404: Not Found' when launcher checking the libraries.

When I launch the game. I get this error message: Name: forge-1.12-14.21.1.2443.jar URL: http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.12-14.21.1.2443/forge-1.12-14.21.1.2443.jar Error details: HTTP 404: Not Found Filename on disk: 1f8b-efff-9e5e-61ca Path: /var/folders/2g/4x1xzstj4vdbj939flg1q7v00000gn/T/1f8b-efff-9e5e-61ca Exists: file The Maven server Broken ?