Runtime error with AndroidX

[RegisSaffi]

java.lang.UnsupportedOperationException: Somehow we couldn't create the ViewHolder for message. Please, report this issue on GitHub with full stacktrace in description. at d.n.a.j.a.a(SourceFile:640) at d.n.a.j.a.a(SourceFile:615) at d.n.a.j.a.a(SourceFile:545) at d.n.a.j.c.onCreateViewHolder(SourceFile:99) at d.n.a.j.c.onCreateViewHolder(SourceFile:47) at androidx.recyclerview.widget.RecyclerView$g.createViewHolder(SourceFile:7069) at androidx.recyclerview.widget.RecyclerView$v.a(SourceFile:6233) at androidx.recyclerview.widget.RecyclerView$v.b(SourceFile:6116) at androidx.recyclerview.widget.RecyclerView$v.d(SourceFile:6112) at androidx.recyclerview.widget.LinearLayoutManager$c.a(SourceFile:2303) at androidx.recyclerview.widget.LinearLayoutManager.a(SourceFile:1627) at androidx.recyclerview.widget.LinearLayoutManager.a(SourceFile:1587) at androidx.recyclerview.widget.LinearLayoutManager.c(SourceFile:640) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(SourceFile:4132) at androidx.recyclerview.widget.RecyclerView.dispatchLayout(SourceFile:3849) at androidx.recyclerview.widget.RecyclerView.onLayout(SourceFile:4402) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585) at android.widget.LinearLayout.onLayout(LinearLayout.java:1494) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at androidx.coordinatorlayout.widget.CoordinatorLayout.b(SourceFile:1193) at androidx.coordinatorlayout.widget.CoordinatorLayout.d(SourceFile:880) at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(SourceFile:899) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585) at android.widget.LinearLayout.onLayout(LinearLayout.java:1494) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585) at android.widget.LinearLayout.onLayout(LinearLayout.java:1494) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at com.android.internal.policy.DecorView.onLayout(DecorView.java:735) at android.view.View.layout(View.java:17545) at android.view.ViewGroup.layout(ViewGroup.java:5642) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2359) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2078) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1248) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6330)

[Andrew-Chen-Wang]

@RegisSaffi Any updates on this? Do you know where this could be a stem from? Or if you've used something else, any suggestions?

[TinaT2]

@RegisSaffi Does it solve your problem? stackoverflow: Androidx project can't recognize the class of library using android.support.v7

[Andrew-Chen-Wang]

@TinaT2 Based on the Traceback, it seems like OP is using AndroidX?