Unable to canonicalize path absolute

[Compte supprimé]

Bonjour je créé actuellement mon launcher à partir d'un launcher open-source qui utilise electron sous node.js
Sauf que... Quand je démarre le jeu j'obtiens cette erreur dans la console chrome :

[main/INFO]: Unable to canonicalize path absolute:C:\Users\Sunloos\AppData\Roaming\.summervii\instances\summer-v7\forgeModList.json relative to C:\Users\Sunloos\AppData\Roaming\.summervii\instances\summer-v7
java.io.IOException: La syntaxe du nom de fichier, de r�pertoire ou de volume est incorrecte
    at java.io.WinNTFileSystem.canonicalize0(Native Method) ~[?:1.8.0_231]
    at java.io.WinNTFileSystem.canonicalize(Unknown Source) ~[?:1.8.0_231]
    at java.io.File.getCanonicalPath(Unknown Source) ~[?:1.8.0_231]
    at java.io.File.getCanonicalFile(Unknown Source) ~[?:1.8.0_231]
    at cpw.mods.fml.relauncher.ModListHelper.parseListFile(ModListHelper.java:51) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.ModListHelper.parseModList(ModListHelper.java:35) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:236) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:230) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:187) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:138) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:87) [forge-1.7.10-10.13.4.2512.jar:?]
    at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:129) [forge-1.7.10-10.13.4.2512.jar:?]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

Je n'arrive pas à trouver de solution...