It works!!!

android/app/src/main/java/android/railbird/app/MainApplication.java

@@ -15,6 +15,7 @@ import com.facebook.soloader.SoLoader;
 
 import expo.modules.ApplicationLifecycleDispatcher;
 import expo.modules.ReactNativeHostWrapper;
+import com.mrousavy.camera.CameraPackage;
 
 import java.util.List;
 
@@ -32,7 +33,8 @@ public class MainApplication extends Application implements ReactApplication {
         @SuppressWarnings("UnnecessaryLocalVariable")
         List<ReactPackage> packages = new PackageList(this).getPackages();
         // Packages that cannot be autolinked yet can be added manually here, for example:
-        // packages.add(new MyReactNativePackage());
+            // packages.add(new MyReactNativePackage());
+        packages.add(new CameraPackage());
         return packages;
       }