Fixed missing DbModel try-catch

src/main/java/cz/muni/fi/pv168/project/model/db/DbConnectedModel.java

 package cz.muni.fi.pv168.project.model.db;
 
 import cz.muni.fi.pv168.project.data.Identifiable;
+import cz.muni.fi.pv168.project.db.DataAccessException;
 import cz.muni.fi.pv168.project.db.interfaces.DataAccessObject;
 import cz.muni.fi.pv168.project.model.EditableModel;
 import cz.muni.fi.pv168.project.ui.dialog.error.ErrorDialog;
@@ -79,10 +80,15 @@ public class DbConnectedModel<T extends Identifiable> extends DefaultListModel<T
     public void updateFiltered(Predicate<T> predicate) {
         clear();
 
-        for (T element : dataAccessObject.getAll()) {
-            if (predicate.test(element)) {
-                super.addElement(element);
+        try {
+            for (T element : dataAccessObject.getAll()) {
+                if (predicate.test(element)) {
+                    super.addElement(element);
+                }
             }
+        } catch (DataAccessException e) {
+            e.printStackTrace();
+            ErrorDialog.show("Error when querying all elements.", e);
         }
     }