Suddenly I'm getting java.lang.IncompatibleClassChangeError

[txufiknr]

It works fine before, but since about 2 days ago, my app crash. Here's the error log:

java.lang.IncompatibleClassChangeError: Class 'com.ferfalk.simplesearchview.SimpleSearchView$5' does not implement interface 'com.google.android.material.tabs.TabLayout$BaseOnTabSelectedListener' in call to 'void com.google.android.material.tabs.TabLayout$BaseOnTabSelectedListener.onTabSelected(com.google.android.material.tabs.TabLayout$Tab)' (declaration of 'com.google.android.material.tabs.TabLayout$1' appears in /data/app/com.jukat.jualdekat-1/base.apk:classes2.dex)
		at com.google.android.material.tabs.TabLayout$1.onTabSelected(TabLayout.java:783)
		at com.google.android.material.tabs.TabLayout.dispatchTabSelected(TabLayout.java:1730)
		at com.google.android.material.tabs.TabLayout.selectTab(TabLayout.java:1723)
		at com.google.android.material.tabs.TabLayout.selectTab(TabLayout.java:1691)
		at com.google.android.material.tabs.TabLayout$Tab.select(TabLayout.java:2028)
		at com.google.android.material.tabs.TabLayout.addTab(TabLayout.java:667)
		at com.google.android.material.tabs.TabLayout.addTab(TabLayout.java:649)
		at com.google.android.material.tabs.TabLayout.addTab(TabLayout.java:628)
		at com.jukat.jualdekat.EtalaseActivity$muatTab$1.onResponse(EtalaseActivity.kt:114)
		at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall$1$1.run(ExecutorCallAdapterFactory.java:70)
		at android.os.Handler.handleCallback(Handler.java:815)
		at android.os.Handler.dispatchMessage(Handler.java:104)
		at android.os.Looper.loop(Looper.java:207)
	

Script to generate the tabs:

tab_subkategori.removeOnTabSelectedListener(tabListener)
tab_subkategori.removeAllTabs()
listSubKategoriLbl.clear()
listSubKategoriVal.clear()
for ((i, k) in res.lisT_KATEGORI.withIndex()) {
    listSubKategoriLbl.add(k.label)
    listSubKategoriVal.add(k.value)
    tab_subkategori.addTab(tab_subkategori.newTab().setCustomView(R.layout.yukari_tab_small)) <-- this line (114)
    val tab = tab_subkategori.getTabAt(i)!!
    val customTab = tab.customView!!
    customTab.findViewById<TextView>(R.id.lbl_tab).text = k.label
    customTab.findViewById<TextView>(R.id.num_tab).visibility = View.GONE
    tab.tag = k.label
}
tab_subkategori.addOnTabSelectedListener(tabListener)
subkategori = res.lisT_KATEGORI[0].label
setupViewPager()

[txufiknr]

apparently this happened after I updated the gradle to implementation 'com.google.android.material:material:1.1.0-alpha02' from alpha01. How to solve it?

[txufiknr]

This is my layout code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	xmlns:tools="http://schemas.android.com/tools"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:background="#fff"
	android:orientation="vertical"
	tools:context=".EtalaseActivity">

	<com.google.android.material.appbar.AppBarLayout
		android:id="@+id/appbar"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:background="@color/colorPrimary"
		android:theme="@style/AppTheme.AppBarOverlay">

		<FrameLayout
			android:id="@+id/toolbar_container"
			android:layout_width="match_parent"
			android:layout_height="56dp"
			android:background="@color/colorPrimaryDark"
			android:elevation="4dp">

			<androidx.appcompat.widget.Toolbar
				android:id="@+id/nav"
				android:layout_width="match_parent"
				android:layout_height="56dp"
				android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
				app:popupTheme="@style/PopupMenuStyle"
				app:title="Etalase Saya" />

			<com.ferfalk.simplesearchview.SimpleSearchView
				android:id="@+id/searchView"
				android:layout_width="match_parent"
				android:layout_height="match_parent"
				android:background="#fff"
				app:type="bar"
				app:voiceSearch="true" />

		</FrameLayout>

		<com.google.android.material.tabs.TabLayout
			android:id="@+id/tab_subkategori"
			android:layout_width="match_parent"
			android:layout_height="40dp"
			android:background="#fff"
			app:tabIndicatorColor="@color/colorPrimary"
			app:tabMode="scrollable"
			app:tabSelectedTextColor="@color/textBlack"
			app:tabTextAppearance="@style/MyTabText"
			app:tabTextColor="@color/textDarkGray">

		</com.google.android.material.tabs.TabLayout>

	</com.google.android.material.appbar.AppBarLayout>

	<FrameLayout
		android:layout_width="match_parent"
		android:layout_height="0dp"
		android:layout_weight="1">

		<androidx.viewpager.widget.ViewPager
			android:id="@+id/viewPager"
			android:layout_width="match_parent"
			android:layout_height="match_parent" />

		<include layout="@layout/content_progress_full" />

	</FrameLayout>

</LinearLayout>