diff --git a/matsen-tool/package-lock.json b/matsen-tool/package-lock.json
index e9b8821..1416d17 100644
--- a/matsen-tool/package-lock.json
+++ b/matsen-tool/package-lock.json
@@ -7,6 +7,7 @@
     "": {
       "name": "matsen-tool",
       "version": "0.0.0",
+      "license": "ISC",
       "dependencies": {
         "@angular/animations": "^17.0.0",
         "@angular/cdk": "^17.0.4",
diff --git a/matsen-tool/package.json b/matsen-tool/package.json
index beba248..5491044 100644
--- a/matsen-tool/package.json
+++ b/matsen-tool/package.json
@@ -48,5 +48,9 @@
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.1.0",
     "typescript": "~5.2.2"
-  }
+  },
+  "description": "This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 17.0.7.",
+  "main": "index.js",
+  "author": "",
+  "license": "ISC"
 }
diff --git a/matsen-tool/src/app/_components/list/list.component.ts b/matsen-tool/src/app/_components/list/list.component.ts
index 8856b13..38a4742 100644
--- a/matsen-tool/src/app/_components/list/list.component.ts
+++ b/matsen-tool/src/app/_components/list/list.component.ts
@@ -1,5 +1,5 @@
 import {PageEvent} from "@angular/material/paginator";
-import {error} from "@angular/compiler-cli/src/transformers/util";
+import {throwError} from "rxjs";
 
 export class ListComponent{
 
@@ -19,7 +19,7 @@ export class ListComponent{
     }
 
     getData() {
-        error('implement in child class');
+        throwError(() => new Error('implement in child class'));
     }
 
     handlePageEvent(e: PageEvent) {