Unable to run in Android Emulator

[RangerRick]

My project is open-source, you can see the code/configuration here.

I have reports from people with actual Android phones that my app runs fine for them, but I am completely unable to run in an emulator now. It always fails like this:

2020-09-10 12:43:18.347 3517-3517/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.raccoonfink.blobile, PID: 3517
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.raccoonfink.blobile/com.raccoonfink.blobile.MainActivity}: android.view.InflateException: Binary XML file line #2 in com.raccoonfink.blobile:layout/bridge_layout_main: Binary XML file line #2 in com.raccoonfink.blobile:layout/bridge_layout_main: Error inflating class android.support.design.widget.CoordinatorLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3449)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
     Caused by: android.view.InflateException: Binary XML file line #2 in com.raccoonfink.blobile:layout/bridge_layout_main: Binary XML file line #2 in com.raccoonfink.blobile:layout/bridge_layout_main: Error inflating class android.support.design.widget.CoordinatorLayout
     Caused by: android.view.InflateException: Binary XML file line #2 in com.raccoonfink.blobile:layout/bridge_layout_main: Error inflating class android.support.design.widget.CoordinatorLayout
     Caused by: java.lang.ClassNotFoundException: android.support.design.widget.CoordinatorLayout
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:454)
        at android.view.LayoutInflater.createView(LayoutInflater.java:813)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1004)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:959)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:657)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:532)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:555)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161)
        at com.getcapacitor.BridgeActivity.init(BridgeActivity.java:60)
        at com.getcapacitor.BridgeActivity.init(BridgeActivity.java:48)
        at com.raccoonfink.blobile.MainActivity.onCreate(MainActivity.java:19)
        at android.app.Activity.performCreate(Activity.java:8000)
        at android.app.Activity.performCreate(Activity.java:7984)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
2020-09-10 12:43:18.347 3517-3517/? E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.widget.CoordinatorLayout" on path: DexPathList[[zip file "/data/app/~~ijky20Hgxaxbsr7PVjt0-A==/com.raccoonfink.blobile-PWeiGbff844l8JmCny2DzQ==/base.apk"],nativeLibraryDirectories=[/data/app/~~ijky20Hgxaxbsr7PVjt0-A==/com.raccoonfink.blobile-PWeiGbff844l8JmCny2DzQ==/lib/x86, /system/lib, /system_ext/lib, /product/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:207)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        	... 28 more

Any idea what's going on here?

[RangerRick]

Figured it out. I'm using a 3rd-party capacitor plugin that's not been converted to AndroidX yet. Upgrading the plugin fixed it.