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FTBTeam / FTB-App

Electron, Vue2, and Tailwind based frontend system for the FTB App; a new Modpack launcher for FTB and Curse modpacks.
https://feed-the-beast.com/app
GNU Lesser General Public License v2.1
92 stars 26 forks source link

[Bug] Launcher fails to start (Linux) #178

Closed sayhisam1 closed 4 years ago

sayhisam1 commented 4 years ago

Operating System: OS: Fedora 30 (Workstation Edition)

Installer Version: Installer: latest

App Version: App: latest

UI Version: UI: not sure

Log Files: only error I seem to be getting is in the error.log file after attempting to manually start FTBApp with ./FTBApp

java.lang.ClassNotFoundException: net.creeperhost.creeperlauncher.CreeperLauncher
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:766)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:1077)
        at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:80)
        at com.install4j.runtime.launcher.UnixLauncher.start(UnixLauncher.java:66)
        at install4j.net.creeperhost.creeperlauncher.CreeperLauncher.main(Unknown Source)
Uncaught error fetching image:
java.lang.NullPointerException
        at java.desktop/sun.awt.image.URLImageSource.getConnection(URLImageSource.java:101)
        at java.desktop/sun.awt.image.URLImageSource.getDecoder(URLImageSource.java:111)
        at java.desktop/sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:263)
        at java.desktop/sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:212)
        at java.desktop/sun.awt.image.ImageFetcher.run(ImageFetcher.java:176)

Describe the bug The launcher installs correctly, and runs without error the first time after installing. However, any subsequent attempts to open it provide no console output, and generates an error.log file.

To Reproduce Not entirely sure what caused the issue, but here is a list of things I did in between the launcher work Steps to reproduce the behaviour: 1) Run installer 2) Open launcher - it will run as intended 3) Download a modpack 4) Open FTB with a modpack 5) Close FTB (using alt+f4) 6) Reboot computer 7) Open FTB launcher (fails this time)

Expected behaviour FTB Launcher opens (or atleast provides some console output)

Additional Context Think this might be a java environment issue, but I'm not entirely sure how I would go about fixing it. Any pointers?

Mike407 commented 4 years ago

Got the same error on Linux Mint 19.3 Tricia. Same log entry. But after deinstalling and removing the folder i can not even reinstall.

Edit : After installing OpenJRE 11 manually the installer opened, but the launcher still not working launcher.log error.log

Edit: Made the misstake to install as root, running installer as user worked now for me, so the main problem was the not working installation of JRE11, btw, why 11, most older modpacks need 8.

SaltySoltas commented 4 years ago

Also getting this bug on macOS Catalina 10.15.5. Same two exceptions as original poster. Looks like app starts but remains in background for some reason. More details on the tech support sub-forum here

SaltySoltas commented 4 years ago

I think I found a fix @Cloudhunter. It seems when installing the package onto Mac the "launcher-202006271817-a3b3b73d4c-release-all.jar" file doesn't get properly copied over. I re-downloaded the dmg and dragged that file directly to the spot in the package contents in my applications folder. I started the app back up, and it took a minute but then finally opened.

Edit: Looks like there might have been a hotfix?

Cloudhunter commented 4 years ago

We did release a new version to fix that issue a few hours ago - perhaps that's why it is now working for you?