FIX #23871 TIME 0:05 check if reference is not empty

src/frontend/app/indexation/indexation.component.ts

@@ -67,11 +67,13 @@ export class IndexationComponent implements OnInit {
             this.http.get(`../rest/documents/${resId}`).pipe(
                 tap((data: any) => {
                     let ref = '';
-                    let arrRef = data.document.reference.split('/');
-                    arrRef = arrRef.slice(3, arrRef.length);
+                    if (!this.functionsService.empty(data.document.reference)) {
+                        let arrRef = data.document.reference.split('/');
+                        arrRef = arrRef.slice(3, arrRef.length);
 
-                    if (arrRef.length > 0) {
-                        ref = arrRef.join('/');
+                        if (arrRef.length > 0) {
+                            ref = arrRef.join('/');
+                        }
                     }
 
                     this.filesToUpload.push({