[Launcher] Crash !

[TheLeGeek29]

Bonjour ! J'ai créer mon launcher Minecraft en 1.7.10 mais j'ai un crash au lancement après le chargement du launcher ! Help

Logs :

Code :
[21:38:21] [main/ERROR] [LaunchWrapper/]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_71]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1
at com.google.gson.Gson.fromJson(Gson.java:815) ~[Gson.class:?]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[Gson.class:?]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[Gson.class:?]
at net.minecraft.client.main.Main.main(SourceFile:116) ~[Main.class:?]
... 6 more
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:374) ~[JsonReader.class:?]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterF​actory.java:183) ~[MapTypeAdapterFactory$Adapter.class:?]
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterF​actory.java:145) ~[MapTypeAdapterFactory$Adapter.class:?]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[Gson.class:?]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[Gson.class:?]
at com.google.gson.Gson.fromJson(Gson.java:717) ~[Gson.class:?]
at net.minecraft.client.main.Main.main(SourceFile:116) ~[Main.class:?]
... 6 more

Et mes .json n'ont pas l'air malades!

Et je ne trouve pas la solution !
Merci