BENCH-81: fixing rest endpoint issue

src/main/java/com/answerdigital/benhession/academy/answerkingweek2/model/Category.java

@@ -55,6 +55,7 @@ public Category(final AddCategoryRequest categoryRequest) {
         this.name = categoryRequest.name();
         this.description = categoryRequest.description();
     }
+
     public void addItem(final Item item) {
         items.add(item);
     }

src/main/java/com/answerdigital/benhession/academy/answerkingweek2/services/CategoryService.java

@@ -12,6 +12,8 @@
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.Set;
 
@@ -61,6 +63,7 @@ public Category updateCategory(final UpdateCategoryRequest updateCategoryRequest
         return categoryRepository.save(updatedCategory);
     }
 
+    @Transactional(propagation = Propagation.REQUIRED)
     public Category addItemToCategory(final Long categoryId, final Long itemId) {
         final Category category = findById(categoryId);
         final Item item = itemService.findById(itemId);