[ISSUE] FATAL Unable to start activity ComponentInfo

[resolutecake]

Describe the bug
The app crashes due to null, see patch at end

Firewall Logs
N?A

Smartphone (please complete the following information):
all

Additional context

+++ b/app/src/main/java/dev/ukanth/ufirewall/activity/AppDetailActivity.java
@@ -85,9 +85,11 @@ public class AppDetailActivity extends AppCompatActivity {
 
         HashMap<Integer,String> listMaps = Api.getPackagesForUser(Api.getListOfUids());
         String packageNameList = "";
-        PackageInfo packageInfo =  Api.getPackageDetails(ctx, listMaps, appid);
-        if(packageInfo != null) {
-            packageNameList = packageInfo.applicationInfo.name;
+        if (listMaps != null) {
+            PackageInfo packageInfo = Api.getPackageDetails(ctx, listMaps, appid);
+            if (packageInfo != null) {
+                packageNameList = packageInfo.applicationInfo.name;
+            }
         }