java.lang.UnsupportedOperationException: This exception has no message.

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java.lang.UnsupportedOperationException:
at java.util.GregorianCalendar.julianError(GregorianCalendar.java)
at java.util.GregorianCalendar.(GregorianCalendar.java)
at java.util.GregorianCalendar.(GregorianCalendar.java)
at java.text.SimpleDateFormat.(SimpleDateFormat.java)
at java.text.SimpleDateFormat.(SimpleDateFormat.java)
at com.adjust.sdk.Util.dateFormat(Util.java:88)
at com.adjust.sdk.PackageBuilder.addDate(PackageBuilder.java:250)
at com.adjust.sdk.PackageBuilder.injectCreatedAt(PackageBuilder.java:188)
at com.adjust.sdk.PackageBuilder.getIdsParameters(PackageBuilder.java:130)
at com.adjust.sdk.PackageBuilder.buildAttributionPackage(PackageBuilder.java:95)
at com.adjust.sdk.ActivityHandler.getAttributionPackage(ActivityHandler.java:439)
at com.adjust.sdk.ActivityHandler.initInternal(ActivityHandler.java:506)
at com.adjust.sdk.ActivityHandler.access$000(ActivityHandler.java:31)
at com.adjust.sdk.ActivityHandler$1.run(ActivityHandler.java:126)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.os.HandlerThread.run(HandlerThread.java:61)

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