fix: import errors van gabe gefixt, teacher en student abstractie weggedaan

backend/src/entities/assignments/assignment.entity.ts

@@ -51,5 +51,5 @@ export class Assignment {
         },
         mappedBy: 'assignment',
     })
-    groups!: Collection<Group>;
+    groups!: Group[];
 }

backend/src/entities/assignments/group.entity.ts

@@ -1,6 +1,7 @@
 import { Collection, Entity, ManyToMany, ManyToOne, PrimaryKey } from '@mikro-orm/core';
 import { Assignment } from './assignment.entity.js';
 import { Student } from '../users/student.entity.js';
+import { GroupRepository } from '../../data/assignments/group-repository.js';
 
 @Entity({
     repository: () => {

backend/src/entities/classes/class.entity.ts

@@ -8,6 +8,7 @@ import {
 import { v4 } from 'uuid';
 import { Teacher } from '../users/teacher.entity.js';
 import { Student } from '../users/student.entity.js';
+import { ClassRepository } from '../../data/classes/class-repository.js';
 
 @Entity({
     repository: () => {

backend/src/entities/content/attachment.entity.ts

@@ -1,5 +1,6 @@
 import { Entity, ManyToOne, PrimaryKey, Property } from '@mikro-orm/core';
 import { LearningObject } from './learning-object.entity.js';
+import { AttachmentRepository } from '../../data/content/attachment-repository.js';
 
 @Entity({
     repository: () => {

backend/src/entities/content/language.ts

@@ -189,5 +189,5 @@ export const languageMap: Record<string, Language> = {
     nl: Language.Dutch,
     fr: Language.French,
     en: Language.English,
-    de: Language.Germany,
+    de: Language.German,
 };