diff --git a/build.gradle b/build.gradle
index 2dbc51d..d01d172 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 }
 
 group = 'site.easy-startup'
-version = '0.0.10'
+version = '0.0.11-a'
 sourceCompatibility = "17"
 
 configurations {
diff --git a/src/main/java/site/easystartup/web/auth/controller/AuthController.java b/src/main/java/site/easystartup/web/auth/controller/AuthController.java
index 0c55df8..72b4614 100644
--- a/src/main/java/site/easystartup/web/auth/controller/AuthController.java
+++ b/src/main/java/site/easystartup/web/auth/controller/AuthController.java
@@ -39,7 +39,7 @@ public class AuthController {
     private final ModelMapper modelMapper;
 
 
-
+    //@
     @PostMapping("/signup")
     public ResponseEntity<Object> registration(@Valid @RequestBody SignupRequest signupRequest,
                                                       BindingResult bindingResult) {
@@ -54,6 +54,7 @@ public class AuthController {
         return ResponseEntity.ok(new MessageResponse("Account registered successfully!"));
     }
 
+    //@
     @PostMapping("/login")
     public ResponseEntity<Object> authentication(@Valid @RequestBody LoginRequest loginRequest,
                                                    BindingResult bindingResult) {
diff --git a/src/main/java/site/easystartup/web/auth/controller/RegistrationController.java b/src/main/java/site/easystartup/web/auth/controller/RegistrationController.java
index 01ad6ad..b10f5fa 100644
--- a/src/main/java/site/easystartup/web/auth/controller/RegistrationController.java
+++ b/src/main/java/site/easystartup/web/auth/controller/RegistrationController.java
@@ -5,6 +5,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import site.easystartup.web.domain.model.Role;
@@ -20,11 +21,13 @@ public class RegistrationController {
 
     private final UserRepo userRepo;
 
+    //@
     @GetMapping("/registration")
     public String registration() {
         return "registration";
     }
 
+    //@
     @PostMapping("/registration")
     public String addUser(User user, Model model) {
         User userFromDb = userRepo.findByUsername(user.getUsername());
diff --git a/src/main/java/site/easystartup/web/config/MvcConfig.java b/src/main/java/site/easystartup/web/config/MvcConfig.java
new file mode 100644
index 0000000..b75730e
--- /dev/null
+++ b/src/main/java/site/easystartup/web/config/MvcConfig.java
@@ -0,0 +1,18 @@
+package site.easystartup.web.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+
+@Configuration
+@ComponentScan
+@EnableWebMvc
+
+public class MvcConfig extends WebMvcConfigurerAdapter {
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**").allowedMethods("PUT", "GET", "DELETE", "OPTIONS", "PATCH", "POST");
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/site/easystartup/web/controller/UserController.java b/src/main/java/site/easystartup/web/controller/UserController.java
index a01218d..85a63d5 100644
--- a/src/main/java/site/easystartup/web/controller/UserController.java
+++ b/src/main/java/site/easystartup/web/controller/UserController.java
@@ -32,6 +32,7 @@ public class UserController {
     private final ResponseErrorValidation responseErrorValidation;
     private final FastChecksUtil checksUtil;
 
+    //@
     @GetMapping("/user/current")
     public ResponseEntity<Object> getCurrentUser(Principal principal) {
         //if(principal == null)
@@ -43,15 +44,16 @@ public class UserController {
 
     }
 
+    //@
     @GetMapping("/user/{username}")
     public ResponseEntity<UserDto> getUser(@PathVariable String username) {
         Long id = Long.parseLong(username);
-        ResponseEntity<UserDto> result = checksUtil.nullIfValid(id);
+        ResponseEntity<UserDto> result = checksUtil.nullIfValid(username);
         return result == null ? ResponseEntity.ok().body(modelMapper.map(userService.getUserByUsername(username), UserDto.class)) : result;
     }
 
 
-
+    //@
     @PutMapping("/user/edit/{username}")
     public ResponseEntity<Object> userEdit(@PathVariable String username,@Valid @RequestBody UserRequest userRequest,
                                            BindingResult bindingResult, Principal principal) {
diff --git a/src/main/java/site/easystartup/web/forum/controller/ForumController.java b/src/main/java/site/easystartup/web/forum/controller/ForumController.java
index 2a26d27..1822a07 100644
--- a/src/main/java/site/easystartup/web/forum/controller/ForumController.java
+++ b/src/main/java/site/easystartup/web/forum/controller/ForumController.java
@@ -38,6 +38,7 @@ public class ForumController {
     private final ModelMapper modelMapper;
     private final ResponseErrorValidation responseErrorValidation;
 
+    //@
     @GetMapping("/")
     public ResponseEntity<List<TopicDto>> main(@Valid @RequestBody ProjectRequest projectRequest,
                                                     BindingResult bindingResult,
@@ -47,6 +48,7 @@ public class ForumController {
         return ResponseEntity.ok().body(topics);
     }
 
+    //@
     @GetMapping("/my")
     public ResponseEntity<List<DiscussionDto>> my(Principal principal) {
         var discussions = forumService.getDiscussionsByAuthor(principal)
@@ -55,6 +57,7 @@ public class ForumController {
         return ResponseEntity.ok().body(discussions);
     }
 
+    //@
     @GetMapping("/takepart")
     public ResponseEntity<List<DiscussionDto>> takePart(Principal principal) {
         var discussions = forumService.getDiscussionsByMember(principal)
@@ -62,6 +65,7 @@ public class ForumController {
         return ResponseEntity.ok().body(discussions);
     }
 
+    //@
     @Secured({"ADMIN", "MODER"})
     @PostMapping("/new")
     public ResponseEntity<Object> forumNew(@Valid @RequestBody TopicRequest topicRequest,
@@ -74,6 +78,7 @@ public class ForumController {
         return ResponseEntity.ok().body(modelMapper.map(topic, TopicDto.class));
     }
 
+    //@
     @GetMapping("/{topic_id}/{page_id}")
     public ResponseEntity<List<DiscussionDto>> topicPage(@PathVariable long topic_id,
                               @PathVariable long page_id) {
@@ -82,11 +87,13 @@ public class ForumController {
         return ResponseEntity.ok().body(discussions);
     }
 
+    //@
     @GetMapping("/discussion/{discussion_id}")
     public ResponseEntity<DiscussionDto> discussion(@PathVariable(value = "discussion_id") long discussion_id) {
         return ResponseEntity.ok().body(modelMapper.map(forumService.getDiscussionById(discussion_id), DiscussionDto.class));
     }
 
+    //@
     @PostMapping("/new/{topic_id}")
     public ResponseEntity<Object> discussionNew(@PathVariable long topic_id,
                                    @Valid @RequestBody DiscussionRequest discussionRequest,
@@ -99,6 +106,7 @@ public class ForumController {
         return ResponseEntity.ok().body(modelMapper.map(discussion, DiscussionDto.class));
     }
 
+    //@
     @PutMapping("/discussion/edit/{discussion_id}")
     public ResponseEntity<Object> discussionEdit(@Valid @RequestBody DiscussionRequest discussionRequest,
                                  @PathVariable long discussion_id,
@@ -111,6 +119,7 @@ public class ForumController {
         return ResponseEntity.ok().body(modelMapper.map(discussionUpdated, DiscussionDto.class));
     }
 
+    //@
     @PostMapping("/discussion/new/{discussion_id}")
     public ResponseEntity<Object> messageAdd(@PathVariable long discussion_id,
                                              @Valid @RequestBody DiscussionMessageRequest messageRequest,
@@ -123,11 +132,13 @@ public class ForumController {
         return ResponseEntity.ok().body(modelMapper.map(discussionMessage, DiscussionMessageDto.class));
     }
 
+    //@
     @GetMapping("/message/{message_id}")
     public ResponseEntity<DiscussionMessageDto> message(@PathVariable long message_id) {
         return ResponseEntity.ok().body(modelMapper.map(forumService.getDiscussionMessageById(message_id), DiscussionMessageDto.class));
     }
 
+    //@
     @PutMapping("/message/edit/{message_id}")
     public ResponseEntity<Object> messageEdit(@Valid @RequestBody DiscussionMessageRequest messageRequest,
                               @PathVariable long message_id,
@@ -140,6 +151,7 @@ public class ForumController {
         return ResponseEntity.ok().body(modelMapper.map(messageUpdated, DiscussionMessageDto.class));
     }
 
+    //@
     @DeleteMapping("/message/delete/{message_id}")
     public ResponseEntity<Object> messageDelete(@PathVariable long message_id, Principal principal) {
         DiscussionMessage message = forumService.getDiscussionMessageById(message_id);
diff --git a/src/main/java/site/easystartup/web/notification/controller/NotificationController.java b/src/main/java/site/easystartup/web/notification/controller/NotificationController.java
index 0ad20ac..7702453 100644
--- a/src/main/java/site/easystartup/web/notification/controller/NotificationController.java
+++ b/src/main/java/site/easystartup/web/notification/controller/NotificationController.java
@@ -5,6 +5,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.messaging.handler.annotation.Payload;
 import org.springframework.messaging.simp.SimpMessagingTemplate;
 import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import site.easystartup.web.notification.domian.Notification;
@@ -18,6 +19,7 @@ public class NotificationController {
     private final SimpMessagingTemplate messagingTemplate;
     Logger logger = Logger.getGlobal();
 
+    //@
     @GetMapping("/notify")
     public void notification(Principal principal, @Payload Notification notification) {
         logger.info("Web socket sent notification to " + principal.getName());
diff --git a/src/main/java/site/easystartup/web/notification/controller/NotificationRestController.java b/src/main/java/site/easystartup/web/notification/controller/NotificationRestController.java
index 635ae00..07b9215 100644
--- a/src/main/java/site/easystartup/web/notification/controller/NotificationRestController.java
+++ b/src/main/java/site/easystartup/web/notification/controller/NotificationRestController.java
@@ -3,10 +3,7 @@ package site.easystartup.web.notification.controller;
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 import site.easystartup.web.notification.domian.Notification;
 import site.easystartup.web.notification.repo.NotificationRepo;
 import site.easystartup.web.notification.service.NotificationService;
@@ -19,11 +16,13 @@ import java.util.List;
 public class NotificationRestController {
     private final NotificationService notificationService;
 
+    //@
     @GetMapping("/notifications/{username}")
     public ResponseEntity<List<Notification>> notification(@PathVariable String username, Principal principal) {
         return ResponseEntity.ok().body(notificationService.getNotificationByRecipient(username, principal));
     }
 
+    //@
     @DeleteMapping("/notifications/{id}/delete")
     public void delete(@PathVariable long id,
                        Principal principal) {
diff --git a/src/main/java/site/easystartup/web/post/controller/PostController.java b/src/main/java/site/easystartup/web/post/controller/PostController.java
index 3dfdab1..5e2b55b 100644
--- a/src/main/java/site/easystartup/web/post/controller/PostController.java
+++ b/src/main/java/site/easystartup/web/post/controller/PostController.java
@@ -33,6 +33,7 @@ public class PostController {
     private final ModelMapper modelMapper;
     private final ResponseErrorValidation responseErrorValidation;
 
+    //@
     @GetMapping("/")
     public ResponseEntity<List<PostDto>> main(Principal principal) {
         var posts = postService.getAllPostsByAuthor(principal.getName())
@@ -40,6 +41,7 @@ public class PostController {
         return ResponseEntity.ok().body(posts);
     }
 
+    //@
     @PostMapping("/new")
     public ResponseEntity<Object> createPost(@Valid @RequestBody PostRequest postRequest, BindingResult bindingResult,
                                              Principal principal) {
@@ -50,6 +52,7 @@ public class PostController {
         return ResponseEntity.ok().body(modelMapper.map(post, PostDto.class));
     }
 
+    //@
     @GetMapping("/user/{username}")
     public ResponseEntity<List<PostDto>> user(@PathVariable String username) {
         var posts = postService.getAllPostsByAuthor(username)
@@ -57,6 +60,7 @@ public class PostController {
         return ResponseEntity.ok().body(posts);
     }
 
+    //@
     @PutMapping("/edit/{post_id}")
     public ResponseEntity<Object> edit(@Valid @RequestBody PostRequest postRequest, BindingResult bindingResult,
                                              Principal principal, @PathVariable long post_id) {
@@ -67,6 +71,7 @@ public class PostController {
         return ResponseEntity.ok().body(modelMapper.map(post, PostDto.class));
     }
 
+    //@
     @DeleteMapping("/delete/{post_id}/")
     public void delete(@PathVariable long post_id,
                        Principal principal) {
@@ -76,6 +81,7 @@ public class PostController {
         else postService.delete(post);
     }
 
+    //@
     @PutMapping("/like/{post_id}/")
     public ResponseEntity<Object> like(Principal principal, @PathVariable long post_id) {
         Post post = postService.getPostById(post_id);
@@ -84,6 +90,7 @@ public class PostController {
         return ResponseEntity.ok().body(modelMapper.map(edited, PostRequest.class));
     }
 
+    //@
     @PutMapping("/dislike/{post_id}/")
     public ResponseEntity<Object> dislike(Principal principal, @PathVariable long post_id) {
         Post post = postService.getPostById(post_id);
diff --git a/src/main/java/site/easystartup/web/project/controller/ProjectController.java b/src/main/java/site/easystartup/web/project/controller/ProjectController.java
index df6c2a6..2630fa9 100644
--- a/src/main/java/site/easystartup/web/project/controller/ProjectController.java
+++ b/src/main/java/site/easystartup/web/project/controller/ProjectController.java
@@ -34,6 +34,7 @@ public class ProjectController {
 
     private final ParticipantService participantService;
 
+    //@
     @PostMapping
     @Operation(summary = "Создание проекта")
     public ResponseEntity<Object> createProject(@Valid @RequestBody ProjectRequest projectRequest,
@@ -46,6 +47,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(modelMapper.map(project, ProjectDto.class));
     }
 
+    //@
     @PutMapping("/{projectId}")
     @Operation(summary = "Изменение проекта")
     public ResponseEntity<Object> editProject(@Valid @RequestBody ProjectRequest projectRequest,
@@ -59,6 +61,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(modelMapper.map(projectUpdated, ProjectDto.class));
     }
 
+    //@
     @PutMapping("/{projectId}/{partId}/part")
     @Operation(summary = "Изменение позиции в проекте: Дизайнер/Ui designer")
     public ResponseEntity<Object> editPart(@Valid @RequestBody ParticipantDto participantDto,
@@ -74,6 +77,7 @@ public class ProjectController {
     }
 
 
+    //@
     @DeleteMapping("/{projectId}")
     @Operation(summary = "Удаление проекта")
     public ResponseEntity<Object> deleteProject(@PathVariable("projectId") Long projectId,
@@ -82,13 +86,14 @@ public class ProjectController {
         return ResponseEntity.ok(new MessageResponse("Project was deleted!"));
     }
 
+    //@
     @GetMapping("/{projectId}")
     @Operation(summary = "получение проекта по id")
     public ResponseEntity<ProjectDto> getProject(@PathVariable("projectId") Long projectId) {
         return ResponseEntity.ok().body(modelMapper.map(projectService.getProjectById(projectId), ProjectDto.class));
     }
 
-    //
+    //@
     @GetMapping("/{userId}/all")
     @Operation(summary = "Получение всех проектов для пользователя")
     public ResponseEntity<List<ProjectDto>> getAllProjectsForUser(@PathVariable("userId") Long userId) {
@@ -97,6 +102,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(projects);
     }
 
+    //@
     @GetMapping("/{technology}/tech")
     @Operation(summary = "Получение всех проектов с опредлененной технологией")
     public ResponseEntity<List<ProjectDto>> getAllProjectsWithTechnology(@PathVariable("technology") String technology) {
@@ -113,7 +119,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(projects);
     }
 
-
+    //@
     @GetMapping("/{nameOfPosition}/positions")
     @Operation(summary = "Получение всех проектов с указанной позицией : Дизайнер")
     public ResponseEntity<List<ProjectDto>> getAllProjectsWithPosition(@PathVariable("nameOfPosition") String nameOfPosition) {
@@ -122,6 +128,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(projects);
     }
 
+    //@
     @GetMapping("/{commercialStatus}/commercial_status")
     @Operation(summary = "получение всех проектов по коммерческому статусу")
     public ResponseEntity<List<ProjectDto>> getAllProjectsWithCommercialStatus(@PathVariable("commercialStatus") int commercialStatus) {
@@ -130,6 +137,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(projects);
     }
 
+    //@
     @GetMapping("/requests")
     @Operation(summary = "получение всех поданных заявок на проект")
     public ResponseEntity<List<ParticipantDto>> getAllRequestsForProject(@RequestBody Long projectId) {
@@ -138,6 +146,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(requests);
     }
 
+    //@
     @PostMapping("/apply")
     @Operation(summary = "подать заявку на участие в проекте")
     public ResponseEntity<ProjectDto> applyOnProject(@RequestBody ParticipantRequest participantRequest,
@@ -147,6 +156,7 @@ public class ProjectController {
         return ResponseEntity.ok().body(modelMapper.map(project, ProjectDto.class));
     }
 
+    //@
     @PostMapping("/participant")
     @Operation(summary = "утвердить участница на проект")
     public ResponseEntity<ProjectDto> confirmParticipant(@RequestBody ParticipantRequest participantRequest,
diff --git a/src/main/java/site/easystartup/web/storage/controller/FileUploadController.java b/src/main/java/site/easystartup/web/storage/controller/FileUploadController.java
index 58fcecd..ec22aa8 100644
--- a/src/main/java/site/easystartup/web/storage/controller/FileUploadController.java
+++ b/src/main/java/site/easystartup/web/storage/controller/FileUploadController.java
@@ -25,6 +25,7 @@ public class FileUploadController {
         this.storageService = storageService;
     }
 
+    //@
     @GetMapping("/upload")
     public String listUploadedFiles(Model model) {
         if(storageService.loadAll() == null) {
@@ -43,6 +44,7 @@ public class FileUploadController {
     @SneakyThrows
     @GetMapping("/files/{filename:.+}")
     @ResponseBody
+    //@
     public ResponseEntity<Resource> serveFile(@PathVariable String filename) {
         Resource file = storageService.load(filename);
         return ResponseEntity.ok()
@@ -50,6 +52,7 @@ public class FileUploadController {
     }
 
     @PostMapping("/upload")
+    //@
     public String handleFileUpload(@RequestParam("file") MultipartFile file,
                                    Model model) {
         storageService.save(file);
diff --git a/src/main/java/site/easystartup/web/util/FastChecksUtil.java b/src/main/java/site/easystartup/web/util/FastChecksUtil.java
index f195115..e5e6213 100644
--- a/src/main/java/site/easystartup/web/util/FastChecksUtil.java
+++ b/src/main/java/site/easystartup/web/util/FastChecksUtil.java
@@ -11,7 +11,7 @@ import site.easystartup.web.service.UserService;
 public class FastChecksUtil {
     private final UserService userService;
 
-    public<T> ResponseEntity<T> nullIfValid(Long user) {
+    public<T> ResponseEntity<T> nullIfValid(String user) {
         if(!userService.userExists(user)) {
             return ResponseEntity.notFound().build();
         }
diff --git a/src/test/java/site/easystartup/web/ProjectServiceTests.java b/src/test/java/site/easystartup/web/ProjectServiceTests.java
index c904237..7260d7b 100644
--- a/src/test/java/site/easystartup/web/ProjectServiceTests.java
+++ b/src/test/java/site/easystartup/web/ProjectServiceTests.java
@@ -50,7 +50,7 @@ public class ProjectServiceTests {
         ProjectRequest projectRequest = new ProjectRequest();
         projectRequest.setDescription("testDesc");
         projectRequest.setTitle("testTitle");
-        projectRequest.setCover(file);
+        //projectRequest.setCover(file);
         projectRequest.setTechnology(new ArrayList<>());
         project = projectService.createProject(projectRequest, principal);
     }