fix run error

app/build.gradle

@@ -11,6 +11,7 @@ plugins {
 
     // Firebase
     id 'com.google.gms.google-services'
+    id 'com.google.firebase.crashlytics'
 }
 
 android {

app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
         android:theme="@style/Theme.Studeez"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".activities.MainActivity"
             android:exported="true"
             android:label="@string/app_name"
             android:theme="@style/Theme.Studeez">

build.gradle

@@ -9,6 +9,8 @@ buildscript {
 
     dependencies {
         classpath 'com.google.gms:google-services:4.3.15'
+        classpath 'com.android.tools.build:gradle:7.2.0'
+        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.9.4'
     }
 }// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {