Android konnte eine oder mehrere Klassen nicht instanziieren

Ich habe ein laufendes Projekt und alle XML-Dateien zeigen mir die Fehlermeldung Android Failed to instantiate one or more classes an. Das Programm funktioniert immer noch.

Ich habe den Cache geleert und Caches und Restart für ungültig erklärt.

Hier die vollständige Nachricht:

Die folgenden Klassen konnten nicht instanziiert werden: Android.support.v7.widget.AppCompatTextView

Tipp: Verwenden Sie View.isInEditMode () in Ihrer benutzerdefinierten Ansicht, um Code zu überspringen oder Beispieldaten anzuzeigen, wenn diese in der IDE angezeigt werden.

Java.lang.NullPointerException
    at Android.content.res.Resources_Delegate.getValue(Resources_Delegate.Java:788)
    at Android.content.res.Resources.getValue(Resources.Java:1286)
    at Android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.Java:212)
    at Android.support.v4.content.res.ResourcesCompat.getFont(ResourcesCompat.Java:206)
    at Android.support.v7.widget.TintTypedArray.getFont(TintTypedArray.Java:119)
    at Android.support.v7.widget.AppCompatTextHelper.updateTypefaceAndStyle(AppCompatTextHelper.Java:208)
    at Android.support.v7.widget.AppCompatTextHelper.loadFromAttributes(AppCompatTextHelper.Java:152)
    at Android.support.v7.widget.AppCompatTextHelperV17.loadFromAttributes(AppCompatTextHelperV17.Java:38)
    at Android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.Java:81)
    at Android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.Java:71)
    at Sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at Sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.Java:62)
    at Sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.Java:45)
    at Java.lang.reflect.Constructor.newInstance(Constructor.Java:423)
    at org.jetbrains.Android.uipreview.ViewLoader.createNewInstance(ViewLoader.Java:475)
    at org.jetbrains.Android.uipreview.ViewLoader.loadClass(ViewLoader.Java:250)
    at org.jetbrains.Android.uipreview.ViewLoader.loadClass(ViewLoader.Java:213)
    at com.Android.tools.idea.rendering.LayoutlibCallbackImpl.loadClass(LayoutlibCallbackImpl.Java:193)
    at Android.view.BridgeInflater.loadCustomView(BridgeInflater.Java:333)
    at Android.view.BridgeInflater.onCreateView(BridgeInflater.Java:152)
    at Android.view.LayoutInflater.onCreateView(LayoutInflater.Java:717)
    at Android.view.LayoutInflater.createViewFromTag(LayoutInflater.Java:785)
    at Android.view.BridgeInflater.createViewFromTag(BridgeInflater.Java:222)
    at Android.view.LayoutInflater.createViewFromTag(LayoutInflater.Java:727)
    at Android.view.LayoutInflater.rInflate_Original(LayoutInflater.Java:858)
    at Android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.Java:70)
    at Android.view.LayoutInflater.rInflate(LayoutInflater.Java:834)
    at Android.view.LayoutInflater.inflate(LayoutInflater.Java:492)
    at com.Android.layoutlib.bridge.bars.CustomBar.<init>(CustomBar.Java:95)
    at com.Android.layoutlib.bridge.bars.StatusBar.<init>(StatusBar.Java:67)
    at com.Android.layoutlib.bridge.impl.Layout.createStatusBar(Layout.Java:224)
    at com.Android.layoutlib.bridge.impl.Layout.<init>(Layout.Java:146)
    at com.Android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.Java:301)
    at com.Android.layoutlib.bridge.Bridge.createSession(Bridge.Java:429)
    at com.Android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.Java:368)
    at com.Android.tools.idea.rendering.RenderTask$2.compute(RenderTask.Java:567)
    at com.Android.tools.idea.rendering.RenderTask$2.compute(RenderTask.Java:549)
    at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.Java:863)
    at com.Android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.Java:549)
    at com.Android.tools.idea.rendering.RenderTask.lambda$inflate$1(RenderTask.Java:680)
    at Java.util.concurrent.FutureTask.run(FutureTask.Java:266)
    at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1142)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:617)
    at Java.lang.Thread.run(Thread.Java:745)