Preguntas etiquetadas con inflate-exception

Recibo errores de Crashlytics que indican que en algunos dispositivos falta com.google.android.webview. ¿Cómo es eso posible? java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp.app/com.myapp.ReaderActivity}: android.view.InflateException: Binary XML file line #29: Error inflating class com.myapp.MyWebView at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360) at android.app.ActivityThread.access$800(ActivityThread.java:144) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5221) at java.lang.reflect.Method.invoke(Method.java) at java.lang.reflect.Method.invoke(Method.java:372) …

116 android  webview  proguard  android-5.0-lollipop  inflate-exception 

Recibo un error al usar el funcionario FloatingActionButtonde la biblioteca de diseño de soporte de Google. Aquí está mi LogCat. android.view.InflateException: Binary XML file line #34: Error inflating class android.support.design.widget.FloatingActionButton at android.view.LayoutInflater.createView(LayoutInflater.java:633) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743) at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) at android.view.LayoutInflater.rInflate(LayoutInflater.java:809) at android.view.LayoutInflater.inflate(LayoutInflater.java:504) at de.robv.android.xposed.XposedBridge.invokeOriginalMethodNative(Native Method) at de.robv.android.xposed.XposedBridge.handleHookedMethod(XposedBridge.java:655) at android.view.LayoutInflater.inflate(Unknown Source) at android.view.LayoutInflater.inflate(LayoutInflater.java:414) …

88 android  android-appcompat  inflate-exception  floating-action-button  android-support-design