diff --git a/ExpressAPI/.idea/DojoBackendAPI.iml b/ExpressAPI/.idea/DojoBackendAPI.iml
index f94b98967da5ba1253b527d008b563510c3da242..565eef92b6c08946f17ac6a0e8a3c6e2e0a3bc00 100644
--- a/ExpressAPI/.idea/DojoBackendAPI.iml
+++ b/ExpressAPI/.idea/DojoBackendAPI.iml
@@ -15,4 +15,7 @@
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
+  <component name="SonarLintModuleSettings">
+    <option name="uniqueId" value="2749ea0f-74a8-42c0-9fd6-d6a4b4cd75a4" />
+  </component>
 </module>
\ No newline at end of file
diff --git a/ExpressAPI/src/express/API.ts b/ExpressAPI/src/express/API.ts
index a55896ae65a74961ce491a26e3081bb0f14719d9..201faa2cc8f75e32a483999ca418b559b1993003 100644
--- a/ExpressAPI/src/express/API.ts
+++ b/ExpressAPI/src/express/API.ts
@@ -38,7 +38,7 @@ class API implements WorkerTask {
 
     private initBaseMiddlewares() {
         this.backend.use(multer({
-                                    limits: { fieldSize: 100 * 1024 * 1024 }
+                                    limits: { fieldSize: 15 * 1024 * 1024 }
                                 }).none()); //Used for extract params from body with format "form-data", The none is for say that we do not wait a file in params
         this.backend.use(morganMiddleware); //Log API accesses
         this.backend.use(helmet()); //Help to secure express, https://helmetjs.github.io/
diff --git a/ExpressAPI/src/routes/AssignmentRoutes.ts b/ExpressAPI/src/routes/AssignmentRoutes.ts
index 5b607abe79ae9573cc42b072baf09559d802f2b2..23668807edbfed6945313b02ce1b1d9425983f3e 100644
--- a/ExpressAPI/src/routes/AssignmentRoutes.ts
+++ b/ExpressAPI/src/routes/AssignmentRoutes.ts
@@ -201,8 +201,6 @@ class AssignmentRoutes implements RoutesManager {
                 logger.error(error);
                 res.status(StatusCodes.INTERNAL_SERVER_ERROR).send();
             }
-
-            return;
         };
     }
 
diff --git a/ExpressAPI/src/routes/ExerciseRoutes.ts b/ExpressAPI/src/routes/ExerciseRoutes.ts
index ff7cad68a0dcdb8c0752cf6f943ad36c3d425c86..3d8c3e1769f82a9dc72501ee4268d654abfc9aee 100644
--- a/ExpressAPI/src/routes/ExerciseRoutes.ts
+++ b/ExpressAPI/src/routes/ExerciseRoutes.ts
@@ -119,11 +119,11 @@ class ExerciseRoutes implements RoutesManager {
                         suffix++;
                     } else {
                         req.session.sendResponse(res, StatusCodes.INTERNAL_SERVER_ERROR, {}, 'Unknown gitlab error while forking repository', DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR);
-                        return;
+                        return undefined;
                     }
                 } else {
                     req.session.sendResponse(res, StatusCodes.INTERNAL_SERVER_ERROR, {}, 'Unknown error while forking repository', DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR);
-                    return;
+                    return undefined;
                 }
             }
         } while ( suffix < Config.exercise.maxSameName );
@@ -131,7 +131,7 @@ class ExerciseRoutes implements RoutesManager {
         if ( suffix >= Config.exercise.maxSameName ) {
             logger.error('Max exercise with same name reached');
             req.session.sendResponse(res, StatusCodes.INSUFFICIENT_SPACE_ON_RESOURCE, undefined, 'Max exercise per assignment reached', DojoStatusCode.MAX_EXERCISE_PER_ASSIGNMENT_REACHED);
-            return;
+            return undefined;
         }
 
         return repository;
@@ -139,13 +139,14 @@ class ExerciseRoutes implements RoutesManager {
 
     private async createExercise(req: express.Request, res: express.Response) {
         const params: { members: Array<GitlabUser> } = req.body;
-        params.members = [ await req.session.profile.gitlabProfile!.value, ...params.members ].removeObjectDuplicates(gitlabUser => gitlabUser.id);
+        params.members = [ await req.session.profile.gitlabProfile.value, ...params.members ].removeObjectDuplicates(gitlabUser => gitlabUser.id);
         const assignment: Assignment = req.boundParams.assignment!;
 
 
         const reachedLimitUsers: Array<GitlabUser> = await this.checkExerciseLimit(assignment, params.members);
         if ( reachedLimitUsers.length > 0 ) {
-            return req.session.sendResponse(res, StatusCodes.INSUFFICIENT_SPACE_ON_RESOURCE, reachedLimitUsers, 'Max exercise per assignment reached', DojoStatusCode.MAX_EXERCISE_PER_ASSIGNMENT_REACHED);
+            req.session.sendResponse(res, StatusCodes.INSUFFICIENT_SPACE_ON_RESOURCE, reachedLimitUsers, 'Max exercise per assignment reached', DojoStatusCode.MAX_EXERCISE_PER_ASSIGNMENT_REACHED);
+            return;
         }
 
 
@@ -168,13 +169,15 @@ class ExerciseRoutes implements RoutesManager {
 
             await GitlabManager.addRepositoryBadge(repository.id, Config.gitlab.badges.pipeline.link, Config.gitlab.badges.pipeline.imageUrl, 'Pipeline Status');
         } catch ( error ) {
-            return GlobalHelper.repositoryCreationError('Repo params error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            GlobalHelper.repositoryCreationError('Repo params error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            return;
         }
 
         try {
             await GitlabManager.updateFile(repository.id, '.gitlab-ci.yml', fs.readFileSync(path.join(__dirname, '../../assets/exercise_gitlab_ci.yml'), 'base64'), 'Add .gitlab-ci.yml (DO NOT MODIFY THIS FILE)');
         } catch ( error ) {
-            return GlobalHelper.repositoryCreationError('CI file update error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            GlobalHelper.repositoryCreationError('CI file update error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            return;
         }
 
         try {
@@ -215,9 +218,11 @@ class ExerciseRoutes implements RoutesManager {
                                                                     }
                                                                 }) as unknown as Exercise;
 
-            return req.session.sendResponse(res, StatusCodes.OK, exercise);
+            req.session.sendResponse(res, StatusCodes.OK, exercise);
+            return;
         } catch ( error ) {
-            return GlobalHelper.repositoryCreationError('DB error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            await GlobalHelper.repositoryCreationError('DB error', error, req, res, DojoStatusCode.EXERCISE_CREATION_GITLAB_ERROR, DojoStatusCode.EXERCISE_CREATION_INTERNAL_ERROR, repository);
+            return;
         }
     }
 
@@ -235,7 +240,7 @@ class ExerciseRoutes implements RoutesManager {
             return file;
         }));
 
-        const dojoAssignmentFile: AssignmentFile = JSON5.parse(atob(assignmentHjsonFile.content)) as AssignmentFile;
+        const dojoAssignmentFile: AssignmentFile = JSON5.parse(atob(assignmentHjsonFile.content));
 
         const immutablePaths = dojoAssignmentFile.immutable.map(fileDescriptor => fileDescriptor.path);
 
diff --git a/ExpressAPI/src/shared b/ExpressAPI/src/shared
index da76a3b35471ec1e9862ae3b57f5905a909058b5..6214acbd799d9eed3f5b6840858f8d5ecda82c86 160000
--- a/ExpressAPI/src/shared
+++ b/ExpressAPI/src/shared
@@ -1 +1 @@
-Subproject commit da76a3b35471ec1e9862ae3b57f5905a909058b5
+Subproject commit 6214acbd799d9eed3f5b6840858f8d5ecda82c86