diff --git a/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.spec.ts b/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.spec.ts
index 30c490a45c..07b5a00ea3 100644
--- a/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.spec.ts
+++ b/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.spec.ts
@@ -14,12 +14,14 @@ import { RemoteDataBuildService } from '../../../../core/cache/builders/remote-d
 import { ObjectCacheService } from '../../../../core/cache/object-cache.service';
 import { RestResponse } from '../../../../core/cache/response.models';
 import { DSOChangeAnalyzer } from '../../../../core/data/dso-change-analyzer.service';
+import { DSpaceObjectDataService } from '../../../../core/data/dspace-object-data.service';
 import { AuthorizationDataService } from '../../../../core/data/feature-authorization/authorization-data.service';
 import { PaginatedList } from '../../../../core/data/paginated-list';
 import { RemoteData } from '../../../../core/data/remote-data';
 import { EPersonDataService } from '../../../../core/eperson/eperson-data.service';
 import { GroupDataService } from '../../../../core/eperson/group-data.service';
 import { Group } from '../../../../core/eperson/models/group.model';
+import { DSpaceObject } from '../../../../core/shared/dspace-object.model';
 import { HALEndpointService } from '../../../../core/shared/hal-endpoint.service';
 import { PageInfo } from '../../../../core/shared/page-info.model';
 import { UUIDService } from '../../../../core/shared/uuid.service';
@@ -41,6 +43,7 @@ describe('GroupFormComponent', () => {
   let builderService: FormBuilderService;
   let ePersonDataServiceStub: any;
   let groupsDataServiceStub: any;
+  let dsoDataServiceStub: any;
   let authorizationService: AuthorizationDataService;
   let notificationService: NotificationsServiceStub;
   let router;
@@ -97,6 +100,11 @@ describe('GroupFormComponent', () => {
     authorizationService = jasmine.createSpyObj('authorizationService', {
       isAuthorized: observableOf(true)
     });
+    dsoDataServiceStub = {
+      findByHref(href: string): Observable<RemoteData<DSpaceObject>> {
+        return null;
+      }
+    }
     builderService = getMockFormBuilderService();
     translateService = getMockTranslateService();
     router = new RouterMock();
@@ -114,6 +122,7 @@ describe('GroupFormComponent', () => {
       providers: [GroupFormComponent,
         { provide: EPersonDataService, useValue: ePersonDataServiceStub },
         { provide: GroupDataService, useValue: groupsDataServiceStub },
+        { provide: DSpaceObjectDataService, useValue: dsoDataServiceStub },
         { provide: NotificationsService, useValue: notificationService },
         { provide: FormBuilderService, useValue: builderService },
         { provide: DSOChangeAnalyzer, useValue: {} },
diff --git a/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.ts b/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.ts
index 720339c924..2306c675c8 100644
--- a/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.ts
+++ b/src/app/+admin/admin-access-control/group-registry/group-form/group-form.component.ts
@@ -9,11 +9,8 @@ import {
   DynamicTextAreaModel
 } from '@ng-dynamic-forms/core';
 import { TranslateService } from '@ngx-translate/core';
-import { Observable } from 'rxjs/internal/Observable';
-import { combineLatest } from 'rxjs/internal/observable/combineLatest';
-import { Subscription } from 'rxjs/internal/Subscription';
-import { ObservedValueOf } from 'rxjs/internal/types';
-import { map, switchMap, take } from 'rxjs/operators';
+import { ObservedValueOf, combineLatest as observableCombineLatest, Observable, of as observableOf, Subscription } from 'rxjs';
+import { catchError, map, switchMap, take } from 'rxjs/operators';
 import { getCollectionEditRolesRoute } from '../../../../+collection-page/collection-page-routing-paths';
 import { getCommunityEditRolesRoute } from '../../../../+community-page/community-page-routing-paths';
 import { RestResponse } from '../../../../core/cache/response.models';
@@ -106,7 +103,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
   groupBeingEdited: Group;
 
   /**
-   * Observable whether or not the logged in user is allowed to delete the Group
+   * Observable whether or not the logged in user is allowed to delete the Group & doesn't have a linked object (community / collection linked to workspace group
    */
   canEdit$: Observable<boolean>;
 
@@ -139,7 +136,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
     }));
     this.canEdit$ = this.groupDataService.getActiveGroup().pipe(
       switchMap((group: Group) => {
-        return combineLatest(
+        return observableCombineLatest(
           this.authorizationService.isAuthorized(FeatureID.CanDelete, hasValue(group) ? group.self : undefined),
           this.hasLinkedDSO(group),
           (isAuthorized: ObservedValueOf<Observable<boolean>>, hasLinkedDSO: ObservedValueOf<Observable<boolean>>) => {
@@ -147,7 +144,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
           })
       })
     );
-    combineLatest(
+    observableCombineLatest(
       this.translateService.get(`${this.messagePrefix}.groupName`),
       this.translateService.get(`${this.messagePrefix}.groupDescription`)
     ).subscribe(([groupName, groupDescription]) => {
@@ -172,7 +169,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
       ];
       this.formGroup = this.formBuilderService.createFormGroup(this.formModel);
       this.subs.push(
-        combineLatest(
+        observableCombineLatest(
           this.groupDataService.getActiveGroup(),
           this.canEdit$
         ).subscribe(([activeGroup, canEdit]) => {
@@ -402,7 +399,8 @@ export class GroupFormComponent implements OnInit, OnDestroy {
           } else {
             return false
           }
-        })
+        }),
+        catchError(() => observableOf(false)),
       );
     }
   }
@@ -413,7 +411,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
    */
   getLinkedDSO(group: Group): Observable<RemoteData<DSpaceObject>> {
     if (hasValue(group) && hasValue(group._links.object.href)) {
-      if (group.object == undefined) {
+      if (group.object === undefined) {
         return this.dSpaceObjectDataService.findByHref(group._links.object.href);
       }
       return group.object;
@@ -424,7 +422,7 @@ export class GroupFormComponent implements OnInit, OnDestroy {
    * Get the route to the edit roles tab of the group's linked object (community or collection linked to a workflow group) if it has one
    * @param group
    */
-  getLinkedEditRolesRoute(group: Group): Observable<String> {
+  getLinkedEditRolesRoute(group: Group): Observable<string> {
     if (hasValue(group) && hasValue(group._links.object.href)) {
       return this.getLinkedDSO(group).pipe(
         map((rd: RemoteData<DSpaceObject>) => {
diff --git a/src/app/+admin/admin-access-control/group-registry/groups-registry.component.spec.ts b/src/app/+admin/admin-access-control/group-registry/groups-registry.component.spec.ts
index 9ed7cf473b..1d091e75d1 100644
--- a/src/app/+admin/admin-access-control/group-registry/groups-registry.component.spec.ts
+++ b/src/app/+admin/admin-access-control/group-registry/groups-registry.component.spec.ts
@@ -7,6 +7,7 @@ import { Router } from '@angular/router';
 import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
 import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { Observable, of as observableOf } from 'rxjs';
+import { DSpaceObjectDataService } from '../../../core/data/dspace-object-data.service';
 import { AuthorizationDataService } from '../../../core/data/feature-authorization/authorization-data.service';
 import { PaginatedList } from '../../../core/data/paginated-list';
 import { RemoteData } from '../../../core/data/remote-data';
@@ -16,6 +17,7 @@ import { GroupDataService } from '../../../core/eperson/group-data.service';
 import { EPerson } from '../../../core/eperson/models/eperson.model';
 import { Group } from '../../../core/eperson/models/group.model';
 import { RouteService } from '../../../core/services/route.service';
+import { DSpaceObject } from '../../../core/shared/dspace-object.model';
 import { PageInfo } from '../../../core/shared/page-info.model';
 import { NotificationsService } from '../../../shared/notifications/notifications.service';
 import { GroupMock, GroupMock2 } from '../../../shared/testing/group-mock';
@@ -32,6 +34,7 @@ describe('GroupRegistryComponent', () => {
   let fixture: ComponentFixture<GroupsRegistryComponent>;
   let ePersonDataServiceStub: any;
   let groupsDataServiceStub: any;
+  let dsoDataServiceStub: any;
   let authorizationService: AuthorizationDataService;
 
   let mockGroups;
@@ -80,6 +83,11 @@ describe('GroupRegistryComponent', () => {
         return createSuccessfulRemoteDataObject$(new PaginatedList(new PageInfo({ elementsPerPage: [result].length, totalElements: [result].length, totalPages: 1, currentPage: 1 }), [result]));
       }
     };
+    dsoDataServiceStub = {
+      findByHref(href: string): Observable<RemoteData<DSpaceObject>> {
+        return createSuccessfulRemoteDataObject$(undefined);
+      }
+    }
     authorizationService = jasmine.createSpyObj('authorizationService', {
       isAuthorized: observableOf(true)
     });
@@ -96,6 +104,7 @@ describe('GroupRegistryComponent', () => {
       providers: [GroupsRegistryComponent,
         { provide: EPersonDataService, useValue: ePersonDataServiceStub },
         { provide: GroupDataService, useValue: groupsDataServiceStub },
+        { provide: DSpaceObjectDataService, useValue: dsoDataServiceStub },
         { provide: NotificationsService, useValue: new NotificationsServiceStub() },
         { provide: RouteService, useValue: routeServiceStub },
         { provide: Router, useValue: new RouterMock() },
diff --git a/src/app/+admin/admin-access-control/group-registry/groups-registry.component.ts b/src/app/+admin/admin-access-control/group-registry/groups-registry.component.ts
index 4148b3ed30..d4a1374cfb 100644
--- a/src/app/+admin/admin-access-control/group-registry/groups-registry.component.ts
+++ b/src/app/+admin/admin-access-control/group-registry/groups-registry.component.ts
@@ -2,11 +2,10 @@ import { Component, OnDestroy, OnInit } from '@angular/core';
 import { FormBuilder } from '@angular/forms';
 import { Router } from '@angular/router';
 import { TranslateService } from '@ngx-translate/core';
-import { BehaviorSubject, combineLatest, Observable } from 'rxjs';
+import { BehaviorSubject, combineLatest as observableCombineLatest, Subscription, Observable, of as observableOf } from 'rxjs';
 import { filter } from 'rxjs/internal/operators/filter';
-import { Subscription } from 'rxjs/internal/Subscription';
 import { ObservedValueOf } from 'rxjs/internal/types';
-import { map, switchMap, take } from 'rxjs/operators';
+import { catchError, map, switchMap, take } from 'rxjs/operators';
 import { DSpaceObjectDataService } from '../../../core/data/dspace-object-data.service';
 import { AuthorizationDataService } from '../../../core/data/feature-authorization/authorization-data.service';
 import { FeatureID } from '../../../core/data/feature-authorization/feature-id';
@@ -125,8 +124,8 @@ export class GroupsRegistryComponent implements OnInit, OnDestroy {
     this.subs.push(this.groups$.pipe(
       getAllSucceededRemoteDataPayload(),
       switchMap((groups: PaginatedList<Group>) => {
-        return combineLatest(...groups.page.map((group: Group) => {
-          return combineLatest(
+        return observableCombineLatest(...groups.page.map((group: Group) => {
+          return observableCombineLatest(
             this.authorizationService.isAuthorized(FeatureID.CanDelete, hasValue(group) ? group.self : undefined),
             this.hasLinkedDSO(group),
             (isAuthorized: ObservedValueOf<Observable<boolean>>, hasLinkedDSO: ObservedValueOf<Observable<boolean>>) => {
@@ -199,17 +198,15 @@ export class GroupsRegistryComponent implements OnInit, OnDestroy {
    * @param group
    */
   hasLinkedDSO(group: Group): Observable<boolean> {
-    if (group.object == undefined) {
-      group.object = this.dSpaceObjectDataService.findByHref(group._links.object.href);
-    }
-    return group.object.pipe(
+    return this.dSpaceObjectDataService.findByHref(group._links.object.href).pipe(
       map((rd: RemoteData<DSpaceObject>) => {
         if (hasValue(rd) && hasValue(rd.payload)) {
           return true;
         } else {
           return false
         }
-      })
+      }),
+      catchError(() => observableOf(false)),
     );
   }
 
diff --git a/src/app/core/data/feature-authorization/authorization-data.service.ts b/src/app/core/data/feature-authorization/authorization-data.service.ts
index 4dfa89cde6..ad9b724040 100644
--- a/src/app/core/data/feature-authorization/authorization-data.service.ts
+++ b/src/app/core/data/feature-authorization/authorization-data.service.ts
@@ -20,7 +20,7 @@ import { followLink, FollowLinkConfig } from '../../../shared/utils/follow-link-
 import { Observable } from 'rxjs/internal/Observable';
 import { RemoteData } from '../remote-data';
 import { PaginatedList } from '../paginated-list';
-import { find, map, switchMap, tap } from 'rxjs/operators';
+import { catchError, find, map, switchMap, tap } from 'rxjs/operators';
 import { hasValue, isNotEmpty } from '../../../shared/empty.util';
 import { RequestParam } from '../../cache/models/request-param.model';
 import { AuthorizationSearchParams } from './authorization-search-params';
@@ -71,6 +71,7 @@ export class AuthorizationDataService extends DataService<Authorization> {
           return [];
         }
       }),
+      catchError(() => observableOf(false)),
       oneAuthorizationMatchesFeature(featureId)
     );
   }
diff --git a/src/app/shared/testing/group-mock.ts b/src/app/shared/testing/group-mock.ts
index d0ee135b98..24a78a58e5 100644
--- a/src/app/shared/testing/group-mock.ts
+++ b/src/app/shared/testing/group-mock.ts
@@ -12,6 +12,7 @@ export const GroupMock2: Group = Object.assign(new Group(), {
             href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid2',
         },
         subgroups: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid2/subgroups' },
+        object: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid2/object' },
         epersons: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid2/epersons' }
     },
     _name: 'testgroupname2',
@@ -31,6 +32,7 @@ export const GroupMock: Group = Object.assign(new Group(), {
             href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid',
         },
         subgroups: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid/subgroups' },
+        object: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid2/object' },
         epersons: { href: 'https://dspace.4science.it/dspace-spring-rest/api/eperson/groups/testgroupid/epersons' }
     },
     _name: 'testgroupname',