Fix dependencies

build.gradle

@@ -20,6 +20,8 @@ repositories {
 }
 
 dependencies {
+	implementation 'com.google.code.gson:gson:2.9.0'
+	implementation 'com.auth0:java-jwt:4.0.0'
 	implementation 'org.springframework:spring-websocket:5.3.22'
 	implementation 'org.springframework:spring-messaging:5.3.22'
 	implementation 'org.modelmapper:modelmapper:3.1.0'

src/main/java/site/easystartup/web/chat/controller/ChatController.java

@@ -13,6 +13,8 @@ import site.easystartup.web.chat.domain.request.ChatMessageRequest;
 import site.easystartup.web.chat.repo.ChatMessageRepo;
 import site.easystartup.web.chat.service.ChatService;
 
+import java.util.Date;
+
 @Controller
 @RequiredArgsConstructor(onConstructor_ = @Autowired)
 public class ChatController {
@@ -25,6 +27,7 @@ public class ChatController {
         var room = chatService
                 .getChatRoom(chatMessage.getRecipientName(), chatMessage.getRecipientId());
         chatMessage.setChatId(room.getChatId());
+        room.setLast_update(new Date());
 
         ChatMessage saved = chatService.save(chatMessage);