diff --git a/00-backend/src/main/java/de/htwsaar/webshop/controller/ErrorController.java b/00-backend/src/main/java/de/htwsaar/webshop/controller/ErrorController.java
index 6cb4595..5d09ed5 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/controller/ErrorController.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/controller/ErrorController.java
@@ -5,12 +5,10 @@ import jakarta.servlet.http.HttpServletRequest;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.core.io.Resource;
 import org.springframework.http.ResponseEntity;
-import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import static de.htwsaar.webshop.config.ControllerPathConfig.ERROR;
-import static de.htwsaar.webshop.util.LoggerUtil.logRequest;
 
 
 /**
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
index 1ae9527..fc0135f 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/ArticleRepository.java
@@ -9,6 +9,7 @@ import java.util.Optional;
 import java.util.UUID;
 
 @Repository
+@SuppressWarnings("unused")
 public interface ArticleRepository extends JpaRepository<Article, Long> {
     Optional<Article> findArticleById(@NonNull Long id);
     Optional<Article> findArticleByName(@NonNull String Name);
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/ReviewRepository.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/ReviewRepository.java
index 19d0c83..aeee9b4 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/ReviewRepository.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/ReviewRepository.java
@@ -6,7 +6,6 @@ import jakarta.validation.constraints.Positive;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
-import java.util.List;
 import java.util.stream.Stream;
 
 @Repository
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
index a9c005e..6e7eec5 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Article.java
@@ -8,7 +8,6 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 
-import java.util.List;
 import java.util.UUID;
 
 @Entity
@@ -45,6 +44,6 @@ public class Article {
     @Column(name = "discount100", nullable = false)
     private Integer discount100;
 
-    @Column(name = "catefory", nullable = false)
+    @Column(name = "category", nullable = false)
     private String category;
 }
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Image.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Image.java
index 294a871..80e9eab 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Image.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Image.java
@@ -1,8 +1,6 @@
 package de.htwsaar.webshop.repository.entities;
 
 import jakarta.persistence.*;
-import jakarta.validation.constraints.NotEmpty;
-import jakarta.validation.constraints.NotNull;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
index 43e2986..8ec9567 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/repository/entities/Review.java
@@ -1,9 +1,7 @@
 package de.htwsaar.webshop.repository.entities;
 
-import jakarta.annotation.Nullable;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.Max;
-import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Positive;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java b/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
index 5856751..4d57069 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/ArticleService.java
@@ -5,6 +5,7 @@ import de.htwsaar.webshop.repository.entities.Article;
 import java.util.List;
 import java.util.UUID;
 
+@SuppressWarnings("unused")
 public interface ArticleService {
     List<Article> findAll();
     Article findByUUID(UUID uuid);
diff --git a/00-backend/src/main/java/de/htwsaar/webshop/service/ImageService.java b/00-backend/src/main/java/de/htwsaar/webshop/service/ImageService.java
index b9d31e8..d1d45e7 100644
--- a/00-backend/src/main/java/de/htwsaar/webshop/service/ImageService.java
+++ b/00-backend/src/main/java/de/htwsaar/webshop/service/ImageService.java
@@ -4,6 +4,7 @@ import de.htwsaar.webshop.repository.entities.Image;
 
 import java.util.List;
 
+@SuppressWarnings("unused")
 public interface ImageService {
     List<Image> getImageByItemId(Long itemId);
     Image getImageByArticleId(Long imageId);