makew project-community relation not nullable

libs/common/src/modules/community/entities/community.entity.ts

@@ -34,7 +34,7 @@ export class CommunityEntity extends AbstractEntity<CommunityDto> {
   externalId: string;
 
   @ManyToOne(() => ProjectEntity, (project) => project.communities, {
-    nullable: true,
+    nullable: false,
   })
   project: ProjectEntity;
 }