can't get rid of exception "Caused by: java.lang.AbstractMethodError: abstract method "android.graphics.Typeface com.mikepenz.iconics.typeface.ITypeface.getRawTypeface()""
I don't manage to have the librairy work despite several hours of research. Whatever version I use, it always end up with this exception when I use .build method :

Caused by: java.lang.AbstractMethodError: abstract method "android.graphics.Typeface com.mikepenz.iconics.typeface.ITypeface.getRawTypeface()"

I'm using a project in java. I implemented lastest version of the librairy, as proposed by Android Studio :

implementation "com.mikepenz:iconics-core:5.0.2";
implementation 'com.mikepenz:material-design-iconic-typeface:2.2.0.5@aar'`
Here is how I use it :
new Iconics.Builder().style(new ForegroundColorSpan(colorText)).on(myButton).build();

myButton is an AppCompatButton. Here is my implementation of AppCompat :

implementation 'androidx.appcompat:appcompat:1.3.0-alpha02'
Has anyone any idea ? I checked that I wasn't alone having this issue but I didn't understand very well the answers (is it a problem with my typeface version 2.2.0.5 that isn't compatible with the core v5.0.2 ? )

Thank you