diff --git a/frontend/src/app/ui/plan/invitation/dialog/plan-invitation-dialog.component.html b/frontend/src/app/ui/plan/invitation/dialog/plan-invitation-dialog.component.html
index e81e922ae..652569ad4 100644
--- a/frontend/src/app/ui/plan/invitation/dialog/plan-invitation-dialog.component.html
+++ b/frontend/src/app/ui/plan/invitation/dialog/plan-invitation-dialog.component.html
@@ -9,7 +9,7 @@
 	</div>
 	<div mat-dialog-content class="row">
 		<div>
-			<app-plan-user-field-component [form]="formGroup" [validationErrorModel]="editorModel.validationErrorModel" [sections]="selectedBlueprint.definition.sections" [viewOnly]="false" [initializeUsers]="true" [enableSorting]="false"></app-plan-user-field-component>
+			<app-plan-user-field-component [form]="formGroup" [validationErrorModel]="editorModel.validationErrorModel" [sections]="selectedBlueprint?.definition?.sections" [viewOnly]="false" [initializeUsers]="true" [enableSorting]="false"></app-plan-user-field-component>
 		</div>
 		<div class="col mt-2">
 			<button mat-raised-button *ngIf="hasValue()" [disabled]="inProgressSendButton" (click)="send()" type="button" class="invite-btn">{{'PLAN-USER-INVITATION-DIALOG.ACTIONS.INVITE' | translate}}</button>
diff --git a/frontend/src/app/ui/plan/plan-editor-blueprint/plan-editor.model.ts b/frontend/src/app/ui/plan/plan-editor-blueprint/plan-editor.model.ts
index a6752e335..5994f394a 100644
--- a/frontend/src/app/ui/plan/plan-editor-blueprint/plan-editor.model.ts
+++ b/frontend/src/app/ui/plan/plan-editor-blueprint/plan-editor.model.ts
@@ -45,7 +45,7 @@ export class PlanEditorModel extends BaseEditorModel implements PlanPersist {
 			this.accessType = item.accessType;
 			if (item?.planUsers) { item.planUsers.filter(x => x.isActive === IsActive.Active).map(x => this.users.push(new PlanUserEditorModel(this.validationErrorModel).fromModel(x))); }
 
-			item.blueprint.definition.sections.forEach(section => {
+			item?.blueprint?.definition?.sections?.forEach(section => {
 				if (section.hasTemplates) {
 					const isNew = (item.id == null);
 					const sectionTemplatesFromPlan = item.planDescriptionTemplates?.filter(x => x.sectionId == section.id && x.isActive == IsActive.Active) || [];
@@ -208,7 +208,7 @@ export class PlanPropertiesEditorModel implements PlanPropertiesPersist {
 	fromModel(item: PlanProperties, planReferences: PlanReference[], planBlueprint: PlanBlueprint): PlanPropertiesEditorModel {
 
 
-		planBlueprint.definition.sections.forEach(section => {
+		planBlueprint?.definition?.sections?.forEach(section => {
 			section.fields?.forEach(field => {
 				if (field.category !== PlanBlueprintFieldCategory.System) {
 					this.planBlueprintValues.set(field.id, new PlanBlueprintValueEditorModel(this.validationErrorModel).fromModel(