Error starting 1.16.3-forge-34.1.0 client

[spaceranger]

Hello, first time trying out Forge on Ubuntu 18.04 based linux distro.

I've successfully installed minecraft-launcher for java and I can launch a stock minecraft 1.16.3 game as a client no problem.

I appear to have successfully installed 1.16.3-forge-34.1.0 in that I can see everything I'd expect to see under the /home/(myuseraccount)/.minecraft folder.

When I attempt to launch 1.16.3-forge-34.1.0 from minecraft-launcher, I get the following popup error:

 

Failed to start download.
Name: 1.16.3-forge-34.1.0.jar
URL: https://launcher.mojang.com/v1/objects/1321521b2caf934f7fc9665aab7e059a7b2bfcdf/client.jar
Error details: Permission denied
Couldn't open file for download
Filename on disk: 1.16.3-forge-34.1.0.jar
Path: /home/(myuseraccount)/.minecraft/versions/1.16.3-forge-34.1.0/1.16.3-forge-34.1.0.jar
Exists: Nonexistent

 

In the ./.minecraft/versions/1.16.3-forge-34.1.0 folder, I can only see a 1.16.3-forge-34.1.0.json and no other contents.

It appears that the forge installer placed the 1.16.3-forge-34.1.0.jar file in the following folder, along with the client and universal jar files:

 

./.minecraft//libraries/net/minecraftforge/forge/1.16.3-34.1.0

 

When I open the 1.16.3-forge-34.1.0.json file, it does include the following section that appears to define the correct path:

    "libraries": [
        {
            "name": "net.minecraftforge:forge:1.16.3-34.1.0",
            "downloads": {
                "artifact": {
                    "path": "net/minecraftforge/forge/1.16.3-34.1.0/forge-1.16.3-34.1.0.jar",
                    "url": "",
                    "sha1": "0a6df450ccb26ad0fd119d5c6faaa4fb0cd889cf",
                    "size": 197523
                }
            }
        },

 

EDIT: I also noticed that the Forge related directories and files were installed beneath .minecraft with the owner as root:root (as I ran the install with sudo), but I ran chown recursively on those Forge directories and change the owner:group to my user account:my group.

There appear to perhaps be two errors here, permission denied either for the launcher.mojang.com error and then the Nonexistent for the jar file.

Can you please help me resolve this issue/these issues?

 

Thank you

Edited September 27, 2020 by spaceranger

[DaemonUmbra]

You didn't run anything as admin/sudo did you?

[spaceranger]

  On 9/27/2020 at 11:22 PM, DaemonUmbra said:

You didn't run anything as admin/sudo did you?

Expand  

No, I run minecraft-launcher under my user account only, and did not alter any permissions or change/add/delete any files under /opt.

I only ran the forge installer under sudo and then chowned all of the files and directories under the /home/(myuser)/.minecraft folder, recursively.

[DaemonUmbra]

The only thing I can recommend is deleting the forge folder(s) in libraries and run the installer again under your user account

[spaceranger]

I'll give that a try, thank you.

Does it matter where I locate the forge installer jar file before I run it? I just have it sitting in /home/(myuser)/Downloads right now.

[spaceranger]

I'll give that a try, thank you.

Does it matter where I locate the forge installer jar file before I run it? I just have it sitting in /home/(myuser)/Downloads right now.

 

EDIT: I'm stupid. I didn't chown everything, the json in the ./versions folder was still root:root. I finished _actually_ chowning everything to my user:my group and forge client started up just fine, it's downloading now.