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unmojang / FjordLauncher

Prism Launcher fork with support for alternative auth servers
GNU General Public License v3.0
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Can't get FTB NeoTech fresh instance to start (neoForge) #31

Closed Panderine closed 2 months ago

Panderine commented 2 months ago

Operating System

Windows

Version of Fjord Launcher

Fjord Launcher 8.4

Version of Qt

Qt 6.6.3

Description of bug

Instance won't start from fresh install

Steps to reproduce

Add instance from curseforge. Select FTB Neotech modpack

Suspected cause

Instance update failed because: Game update failed: it was impossible to fetch the required libraries. Reason: One or more subtasks failed

cant find any more detailed logs about this

This issue is unique

Panderine commented 2 months ago

I think the issue is again with neoforge. Can't get to download the requiered libs even on a fresh instance (no modpack). EDIT: Issue is with neoforge v20.4.237 (latest) previous version does download the libs and launch. Maybe meta server again?

evan-goode commented 2 months ago

I couldn't reproduce this using Minecraft 1.20.4 and NeoForge 20.4.237. Could have been a transient issue with NeoForge's infra. Maybe try clearing your metadata cache (main menu -> Help -> Clear Metadata Cache).

I don't see anything immediately wrong with the metadata server. Ours and prismlauncher's agree that that sha256 of that version of NeoForge is 5a6e0d83f97e85e57d6cdbaa91618bd31f9c0e63f8942ab4f564be8912aa99eb.

If you are able, could you try reproducing this with Prism Launcher, or using Prism Launcher's metadata server? (main menu -> Settings -> APIs -> Services -> change Metadata Server to https://meta.prismlauncher.org/v1/)

Panderine commented 2 months ago

It fails with the same error using prism metadata server. After clearing cache it also fails. If I change version to 20.4.236 it works :(

It works in other launchers ... will try Prism.

EDIT: It works in Prism

Panderine commented 2 months ago

Any way to log or debugg the lib fetching process?

evan-goode commented 2 months ago

You could also try with a totally fresh ~/.local/share/FjordLauncher (and back up the old one).

I debug network stuff by running mitmproxy and configuring Fjord Launcher to use the HTTP proxy server localhost:8080. You'll need to install the mitmproxy certificate: https://docs.mitmproxy.org/stable/concepts-certificates. There could also be some output on stderr or stdout when running Fjord Launcher from the command line.

The two URLs that are different between 20.4.236 and 20.4.237 are:

Are you able to download both of these outside Fjord/Prism?

Panderine commented 2 months ago

Yes, I'm able to download both jars from a browser.

If I delete FjordLauncher\libraries\net\neoforged\neoforge\20.4.237 folder, and launch a plain instance again, it dowloads neoforge-20.4.237-universal.jar but the instance doesn't starts. It shows:

"Instance update failed because: Game update failed: it was impossible to fetch the required libraries. Reason: One or more subtasks failed"

Panderine commented 2 months ago

Did nothing, tried again today and it worked with neoforge 20.4.237... dunno what happened but was clearly from my side. Sorry and thanks for your time!