err fix

src/main/java/app/entities/Stats.java

@@ -8,6 +8,8 @@ import org.springframework.stereotype.Component;
 import java.time.Instant;
 import java.time.LocalDate;
 import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
 
 @Data
 @Component
@@ -87,4 +89,13 @@ public class Stats {
         }
     }
 
+    public HashMap<String, Integer> getCountries() {
+        return new HashMap<>() {{
+            countries.forEach((name, count) -> {
+                if (name != null && count != null && count > 0) {
+                    put(name, count);
+                }
+            });
+        }};
+    }
 }