Some fixes

app/src/main/java/app/fedilab/android/BaseMainActivity.java

@@ -612,7 +612,7 @@ public abstract class BaseMainActivity extends BaseActivity implements NetworkSt
                 binding.profilePicture.setOnClickListener(v -> binding.drawerLayout.openDrawer(GravityCompat.START));
                 Helper.loadPP(binding.profilePicture, currentAccount);
                 headerMainBinding.accountAcc.setText(String.format("%s@%s", currentAccount.mastodon_account.username, currentAccount.instance));
-                if (currentAccount.mastodon_account.display_name.isEmpty()) {
+                if (currentAccount.mastodon_account.display_name == null || currentAccount.mastodon_account.display_name.isEmpty()) {
                     currentAccount.mastodon_account.display_name = currentAccount.mastodon_account.acct;
                 }
                 headerMainBinding.accountName.setText(currentAccount.mastodon_account.display_name);

app/src/main/java/app/fedilab/android/activities/ProfileActivity.java

@@ -348,7 +348,7 @@ public class ProfileActivity extends BaseActivity {
             binding.accountMoved.setText(spannableString, TextView.BufferType.SPANNABLE);
             binding.accountMoved.setMovementMethod(LinkMovementMethod.getInstance());
         }
-        if (account.acct.contains("@"))
+        if (account.acct != null && account.acct.contains("@"))
             binding.warningMessage.setVisibility(View.VISIBLE);
         else
             binding.warningMessage.setVisibility(View.GONE);

app/src/main/java/app/fedilab/android/helper/Helper.java

@@ -1032,17 +1032,26 @@ public class Helper {
         SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(context);
         boolean disableGif = sharedpreferences.getBoolean(context.getString(R.string.SET_DISABLE_GIF), false);
         String targetedUrl = disableGif ? account.mastodon_account.avatar_static : account.mastodon_account.avatar;
-        if (disableGif || (!targetedUrl.endsWith(".gif"))) {
-            Glide.with(view.getContext())
-                    .asDrawable()
-                    .load(targetedUrl)
-                    .thumbnail(0.1f)
-                    .apply(new RequestOptions().transform(new CenterCrop(), new RoundedCorners(10)))
-                    .into(view);
+        if (targetedUrl != null) {
+            if (disableGif || (!targetedUrl.endsWith(".gif"))) {
+                Glide.with(view.getContext())
+                        .asDrawable()
+                        .load(targetedUrl)
+                        .thumbnail(0.1f)
+                        .apply(new RequestOptions().transform(new CenterCrop(), new RoundedCorners(10)))
+                        .into(view);
+            } else {
+                Glide.with(view.getContext())
+                        .asGif()
+                        .load(targetedUrl)
+                        .thumbnail(0.1f)
+                        .apply(new RequestOptions().transform(new CenterCrop(), new RoundedCorners(10)))
+                        .into(view);
+            }
         } else {
             Glide.with(view.getContext())
-                    .asGif()
-                    .load(targetedUrl)
+                    .asDrawable()
+                    .load(R.drawable.ic_person)
                     .thumbnail(0.1f)
                     .apply(new RequestOptions().transform(new CenterCrop(), new RoundedCorners(10)))
                     .into(view);