Undo function on Staggered Grid layout which caused app crash is now fixed.

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

app/src/main/java/com/example/todoapp/fragments/list/ListFragment.kt

@@ -72,21 +72,20 @@ class ListFragment : Fragment(), SearchView.OnQueryTextListener {
                 mToDoViewModel.deleteItem(deletedItem)
                 adapter.notifyItemRemoved(viewHolder.adapterPosition)
                 // Restore Deleted Item
-                restoreDeletedData(viewHolder.itemView, deletedItem, viewHolder.adapterPosition)
+                restoreDeletedData(viewHolder.itemView, deletedItem)
             }
         }
         val itemTouchHelper = ItemTouchHelper(swipeToDeleteCallback)
         itemTouchHelper.attachToRecyclerView(recyclerView)
     }
 
-    private fun restoreDeletedData(view: View, deletedItem: ToDoData, position: Int) {
+    private fun restoreDeletedData(view: View, deletedItem: ToDoData) {
         val snackBar = Snackbar.make(
             view, "Deleted '${deletedItem.title}'",
             Snackbar.LENGTH_LONG
         )
         snackBar.setAction("Undo") {
             mToDoViewModel.insertData(deletedItem)
-            adapter.notifyItemChanged(position)
         }
         snackBar.show()
     }

build.gradle

@@ -11,7 +11,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:4.0.0"
+        classpath 'com.android.tools.build:gradle:4.0.1'
 
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"