failed to build with Android

[FrancescoPaiola]

I'm trying to build (via phonegap build) the app, but as i add this plugin the android build fail width this error:

Error: /var/gimlet/tmp/47411647671860/3202866/gradlew: Command failed with exit code 1 Error output:
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /var/gimlet/tmp/47411647671860/3202866/src/nl/xservices/plugins/SocialSharing.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Dex: Error converting bytecode to dex:
Cause: Dex cannot parse version 52 byte code.
This is caused by library dependencies that have been compiled using Java 8 or above.
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7'
sourceCompatibility = '1.7'
to that submodule's build.gradle file.
    UNEXPECTED TOP-LEVEL EXCEPTION:
    java.lang.RuntimeException: Exception parsing classes
    	at com.android.dx.command.dexer.Main.processClass(Main.java:775)
    	at com.android.dx.command.dexer.Main.processFileBytes(Main.java:741)
    	at com.android.dx.command.dexer.Main.access$1200(Main.java:88)
    	at com.android.dx.command.dexer.Main$FileBytesConsumer.processFileBytes(Main.java:1683)
    	at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:284)
    	at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:166)
    	at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:144)
    	at com.android.dx.command.dexer.Main.processOne(Main.java:695)
    	at com.android.dx.command.dexer.Main.processAllFiles(Main.java:592)
    	at com.android.dx.command.dexer.Main.runMonoDex(Main.java:321)
    	at com.android.dx.command.dexer.Main.run(Main.java:292)
    	at com.android.builder.internal.compiler.DexWrapper.run(DexWrapper.java:54)
    	at com.android.builder.core.DexByteCodeConverter.lambda$dexInProcess$0(DexByteCodeConverter.java:173)
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    	at java.lang.Thread.run(Thread.java:748)
    Caused by: com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)
    	at com.android.dx.cf.direct.DirectClassFile.parse0(DirectClassFile.java:476)
    	at com.android.dx.cf.direct.DirectClassFile.parse(DirectClassFile.java:406)
    	at com.android.dx.cf.direct.DirectClassFile.parseToInterfacesIfNecessary(DirectClassFile.java:388)
    	at com.android.dx.cf.direct.DirectClassFile.getMagic(DirectClassFile.java:251)
    	at com.android.dx.command.dexer.Main.parseClass(Main.java:787)
    	at com.android.dx.command.dexer.Main.access$1600(Main.java:88)
    	at com.android.dx.command.dexer.Main$ClassParserTask.call(Main.java:1722)
    	at com.android.dx.command.dexer.Main.processClass(Main.java:773)
    	... 16 more
    
1 error; aborting

The old version of the plugin didn't have this problem.
Thanks in advance.

[samzilverberg]

there's no mention of this plugin in the stacktrace, but rather a mention of a social sharing plugin, so I think thats where the problem is

[samzilverberg]

no answer received, closing