diff --git a/.changeset/young-panthers-mix.md b/.changeset/young-panthers-mix.md
new file mode 100644
index 0000000000..cbaf3b3704
--- /dev/null
+++ b/.changeset/young-panthers-mix.md
@@ -0,0 +1,13 @@
+---
+'@backstage/plugin-tech-insights-backend': patch
+'@backstage/plugin-microsoft-calendar': patch
+'@backstage/plugin-scaffolder-backend': patch
+'@backstage/plugin-catalog-backend': patch
+'@backstage/backend-tasks': patch
+'@backstage/plugin-cloudbuild': patch
+'@backstage/plugin-gcalendar': patch
+'@backstage/plugin-xcmetrics': patch
+'@backstage/plugin-ilert': patch
+---
+
+Update to handle invalid luxon values
diff --git a/microsite/yarn.lock b/microsite/yarn.lock
index 8a0bbb0d69..a94851108d 100644
--- a/microsite/yarn.lock
+++ b/microsite/yarn.lock
@@ -2950,9 +2950,9 @@ __metadata:
   linkType: hard
 
 "@types/luxon@npm:^3.0.0":
-  version: 3.3.0
-  resolution: "@types/luxon@npm:3.3.0"
-  checksum: f7e3a89fc3ca404fbc3ea538653ed6860bc28f570a8c4d6d24449b89b9b553b7d6ad6cc94a9e129c5b8c9a2b97f0c365b3017f811e59c4a859a9c219a1c918e0
+  version: 3.3.2
+  resolution: "@types/luxon@npm:3.3.2"
+  checksum: b9111132720eae0269538872a5a496b29587ecfc8edc3b0ff7d269aa93a5ff00a131b23d1e9d1f12ec39f2c779ad21bd8d9f90b122c85a182771aabde7f676b8
   languageName: node
   linkType: hard
 
@@ -7366,9 +7366,9 @@ __metadata:
   linkType: hard
 
 "luxon@npm:^3.0.0":
-  version: 3.3.0
-  resolution: "luxon@npm:3.3.0"
-  checksum: 50cf17a0dc155c3dcacbeae8c0b7e80db425e0ba97b9cbdf12a7fc142d841ff1ab1560919f033af46240ed44e2f70c49f76e3422524c7fc8bb8d81ca47c66187
+  version: 3.4.2
+  resolution: "luxon@npm:3.4.2"
+  checksum: efefdfaea90f4c8e502db8eb255385e6dac6733b6a9e1372eaf1a866cc1118363e235a3f6df505b837abc8bbcdfd8f0718a8de387b80cef9ee624d8791ca0844
   languageName: node
   linkType: hard
 
diff --git a/packages/backend-tasks/src/setupTests.ts b/packages/backend-tasks/src/setupTests.ts
index d3232290a7..5245d37c26 100644
--- a/packages/backend-tasks/src/setupTests.ts
+++ b/packages/backend-tasks/src/setupTests.ts
@@ -14,4 +14,7 @@
  * limitations under the License.
  */
 
-export {};
+import { Settings } from 'luxon';
+
+// TS still thinks that methods can return null / placeholders, but we still want to throw as soon as possible when things go wrong
+Settings.throwOnInvalid = true;
diff --git a/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.ts b/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.ts
index 253d7869df..b9ac80cb47 100644
--- a/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.ts
+++ b/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.ts
@@ -112,9 +112,15 @@ export function parseDuration(
     return frequency.cron;
   }
 
-  if (Duration.isDuration(frequency)) {
-    return frequency.toISO();
+  const parsed = Duration.isDuration(frequency)
+    ? frequency
+    : Duration.fromObject(frequency);
+
+  if (!parsed.isValid) {
+    throw new Error(
+      `Invalid duration, ${parsed.invalidReason}: ${parsed.invalidExplanation}`,
+    );
   }
 
-  return Duration.fromObject(frequency).toISO();
+  return parsed.toISO()!;
 }
diff --git a/packages/backend-tasks/src/tasks/TaskWorker.test.ts b/packages/backend-tasks/src/tasks/TaskWorker.test.ts
index b8b24e045a..70be2bf415 100644
--- a/packages/backend-tasks/src/tasks/TaskWorker.test.ts
+++ b/packages/backend-tasks/src/tasks/TaskWorker.test.ts
@@ -47,8 +47,8 @@ describe('TaskWorker', () => {
       const settings: TaskSettingsV2 = {
         version: 2,
         cadence: '*/2 * * * * *',
-        initialDelayDuration: Duration.fromObject({ seconds: 1 }).toISO(),
-        timeoutAfterDuration: Duration.fromObject({ minutes: 1 }).toISO(),
+        initialDelayDuration: Duration.fromObject({ seconds: 1 }).toISO()!,
+        timeoutAfterDuration: Duration.fromObject({ minutes: 1 }).toISO()!,
       };
 
       const worker = new TaskWorker('task1', fn, knex, logger);
@@ -131,7 +131,7 @@ describe('TaskWorker', () => {
         version: 2,
         initialDelayDuration: undefined,
         cadence: '* * * * * *',
-        timeoutAfterDuration: Duration.fromMillis(60000).toISO(),
+        timeoutAfterDuration: Duration.fromMillis(60000).toISO()!,
       };
       const checkFrequency = Duration.fromObject({ milliseconds: 100 });
       const worker = new TaskWorker('task1', fn, knex, logger, checkFrequency);
@@ -154,7 +154,7 @@ describe('TaskWorker', () => {
         version: 2,
         initialDelayDuration: undefined,
         cadence: '* * * * * *',
-        timeoutAfterDuration: Duration.fromMillis(60000).toISO(),
+        timeoutAfterDuration: Duration.fromMillis(60000).toISO()!,
       };
       const checkFrequency = Duration.fromObject({ milliseconds: 100 });
       const worker = new TaskWorker('task1', fn, knex, logger, checkFrequency);
@@ -179,7 +179,7 @@ describe('TaskWorker', () => {
         version: 2,
         initialDelayDuration: undefined,
         cadence: '* * * * * *',
-        timeoutAfterDuration: Duration.fromMillis(60000).toISO(),
+        timeoutAfterDuration: Duration.fromMillis(60000).toISO()!,
       };
 
       const worker = new TaskWorker('task1', fn, knex, logger);
@@ -235,7 +235,7 @@ describe('TaskWorker', () => {
         version: 2,
         initialDelayDuration: undefined,
         cadence: '* * * * * *',
-        timeoutAfterDuration: Duration.fromMillis(60000).toISO(),
+        timeoutAfterDuration: Duration.fromMillis(60000).toISO()!,
       };
 
       const worker1 = new TaskWorker('task1', fn, knex, logger);
diff --git a/plugins/catalog-backend/src/database/DefaultProcessingDatabase.ts b/plugins/catalog-backend/src/database/DefaultProcessingDatabase.ts
index 61a062bc4a..01025f73dd 100644
--- a/plugins/catalog-backend/src/database/DefaultProcessingDatabase.ts
+++ b/plugins/catalog-backend/src/database/DefaultProcessingDatabase.ts
@@ -375,7 +375,7 @@ export class DefaultProcessingDatabase implements ProcessingDatabase {
               entityRef,
               newLocationKey: locationKey,
               existingLocationKey: conflictingKey,
-              lastConflictAt: DateTime.now().toISO(),
+              lastConflictAt: DateTime.now().toISO()!,
             },
           };
           await this.options.eventBroker?.publish(eventParams);
diff --git a/plugins/cloudbuild/src/components/WorkflowRunsTable/WorkflowRunsTable.tsx b/plugins/cloudbuild/src/components/WorkflowRunsTable/WorkflowRunsTable.tsx
index 736e641dbd..294847a700 100644
--- a/plugins/cloudbuild/src/components/WorkflowRunsTable/WorkflowRunsTable.tsx
+++ b/plugins/cloudbuild/src/components/WorkflowRunsTable/WorkflowRunsTable.tsx
@@ -87,7 +87,7 @@ const generatedColumns: TableColumn[] = [
     title: 'Created',
     render: (row: Partial<WorkflowRun>) => (
       <Typography data-testid="cell-created" variant="body2" noWrap>
-        {DateTime.fromISO(row.createTime ?? DateTime.now().toISO()).toFormat(
+        {DateTime.fromISO(row.createTime ?? DateTime.now().toISO()!).toFormat(
           'dd-MM-yyyy hh:mm:ss',
         )}
       </Typography>
diff --git a/plugins/gcalendar/dev/mocks.ts b/plugins/gcalendar/dev/mocks.ts
index c566527590..b6a9f6793c 100644
--- a/plugins/gcalendar/dev/mocks.ts
+++ b/plugins/gcalendar/dev/mocks.ts
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { DateTime } from 'luxon';
 import { GCalendar, GCalendarEvent } from '../src/api';
 
@@ -38,11 +39,11 @@ export const eventsMock: GCalendarEvent[] = [...Array(3).keys()].map(i => ({
   start: {
     dateTime: DateTime.now()
       .minus({ hour: i + 1 })
-      .toISO(),
+      .toISO()!,
     timeZone: 'Europe/London',
   },
   end: {
-    dateTime: DateTime.now().minus({ hour: i }).toISO(),
+    dateTime: DateTime.now().minus({ hour: i }).toISO()!,
     timeZone: 'Europe/London',
   },
   description: '<h3>Dummy title</h3><p>Dummy description</p>',
diff --git a/plugins/gcalendar/src/components/CalendarCard/CalendarCard.tsx b/plugins/gcalendar/src/components/CalendarCard/CalendarCard.tsx
index 0a9b517293..26d6f1eed0 100644
--- a/plugins/gcalendar/src/components/CalendarCard/CalendarCard.tsx
+++ b/plugins/gcalendar/src/components/CalendarCard/CalendarCard.tsx
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { sortBy } from 'lodash';
 import { DateTime } from 'luxon';
 import React, { useState } from 'react';
@@ -67,9 +68,9 @@ export const CalendarCard = () => {
     calendars,
     selectedCalendars: storedCalendars,
     enabled: isSignedIn && calendars.length > 0,
-    timeMin: date.startOf('day').toISO(),
-    timeMax: date.endOf('day').toISO(),
-    timeZone: date.zoneName,
+    timeMin: date.startOf('day').toISO()!,
+    timeMax: date.endOf('day').toISO()!,
+    timeZone: date.zoneName ?? 'UTC', // TODO: Use browser timezone? This probably never happens anyway
   });
 
   const showLoader =
diff --git a/plugins/gcalendar/src/hooks/useEventsQuery.ts b/plugins/gcalendar/src/hooks/useEventsQuery.ts
index 5dd5fb9b32..59de67a1a9 100644
--- a/plugins/gcalendar/src/hooks/useEventsQuery.ts
+++ b/plugins/gcalendar/src/hooks/useEventsQuery.ts
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { compact, unescape } from 'lodash';
 import { useMemo } from 'react';
 import { useQueries } from '@tanstack/react-query';
diff --git a/plugins/ilert/src/components/Shift/ShiftOverrideModal.tsx b/plugins/ilert/src/components/Shift/ShiftOverrideModal.tsx
index 618c35dbc3..63af27c725 100644
--- a/plugins/ilert/src/components/Shift/ShiftOverrideModal.tsx
+++ b/plugins/ilert/src/components/Shift/ShiftOverrideModal.tsx
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import React from 'react';
 import { makeStyles } from '@material-ui/core/styles';
 import Button from '@material-ui/core/Button';
@@ -161,7 +162,7 @@ export const ShiftOverrideModal = ({
             value={start}
             className={classes.formControl}
             onChange={date => {
-              setStart(date ? date.toISO() : '');
+              setStart(date?.toISO() ?? '');
             }}
           />
           <DateTimePicker
@@ -173,7 +174,7 @@ export const ShiftOverrideModal = ({
             value={end}
             className={classes.formControl}
             onChange={date => {
-              setEnd(date ? date.toISO() : '');
+              setEnd(date?.toISO() ?? '');
             }}
           />
         </MuiPickersUtilsProvider>
diff --git a/plugins/kubernetes/src/components/Pods/PodDrawer/PendingPodContent.test.tsx b/plugins/kubernetes/src/components/Pods/PodDrawer/PendingPodContent.test.tsx
index e4d042217b..8896654696 100644
--- a/plugins/kubernetes/src/components/Pods/PodDrawer/PendingPodContent.test.tsx
+++ b/plugins/kubernetes/src/components/Pods/PodDrawer/PendingPodContent.test.tsx
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import React from 'react';
 
 import { render } from '@testing-library/react';
@@ -44,7 +45,7 @@ const podWithConditions = (conditions: IPodCondition[]): any => {
 
 describe('PendingPodContent', () => {
   it('show startup conditions - all healthy', async () => {
-    const oneDayAgo = DateTime.now().minus({ days: 1 }).toISO();
+    const oneDayAgo = DateTime.now().minus({ days: 1 }).toISO()!;
     const { getByText, queryByLabelText, queryAllByLabelText } = render(
       wrapInTestApp(
         <PendingPodContent
@@ -87,7 +88,7 @@ describe('PendingPodContent', () => {
     expect(queryByLabelText('Status error')).not.toBeInTheDocument();
   });
   it('show startup conditions - all fail', async () => {
-    const oneHourAgo = DateTime.now().minus({ hours: 1 }).toISO();
+    const oneHourAgo = DateTime.now().minus({ hours: 1 }).toISO()!;
     const { getByText, queryByLabelText, queryAllByLabelText } = render(
       wrapInTestApp(
         <PendingPodContent
@@ -154,7 +155,7 @@ describe('PendingPodContent', () => {
     expect(queryAllByLabelText('Status error')).toHaveLength(4);
   });
   it('show startup conditions - show unknown', async () => {
-    const oneHourAgo = DateTime.now().minus({ hours: 1 }).toISO();
+    const oneHourAgo = DateTime.now().minus({ hours: 1 }).toISO()!;
     const { getByText, queryByLabelText, getByLabelText } = render(
       wrapInTestApp(
         <PendingPodContent
diff --git a/plugins/microsoft-calendar/src/components/CalendarCard.tsx b/plugins/microsoft-calendar/src/components/CalendarCard.tsx
index dd94bad148..57c520ad0f 100644
--- a/plugins/microsoft-calendar/src/components/CalendarCard.tsx
+++ b/plugins/microsoft-calendar/src/components/CalendarCard.tsx
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { sortBy } from 'lodash';
 import { DateTime } from 'luxon';
 import React, { useState } from 'react';
@@ -56,9 +57,9 @@ export const CalendarCard = () => {
   const { data: events, isLoading: isEventLoading } = useEventsQuery({
     calendarId: selectedCalendarId || defaultCalendarId || '',
     enabled: isSignedIn && calendars.length > 0,
-    timeMin: date.startOf('day').toISO(),
-    timeMax: date.endOf('day').toISO(),
-    timeZone: date.zoneName,
+    timeMin: date.startOf('day').toISO()!,
+    timeMax: date.endOf('day').toISO()!,
+    timeZone: date.zoneName ?? undefined,
   });
 
   const showLoader =
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/DatabaseTaskStore.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/DatabaseTaskStore.ts
index c96bd6b9cd..40ffdb17d4 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/DatabaseTaskStore.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/DatabaseTaskStore.ts
@@ -69,7 +69,7 @@ export type DatabaseTaskStoreOptions = {
 };
 
 /**
- * Typeguard to help DatabaseTaskStore understand when database is PluginDatabaseManager vs. when database is a Knex instance.
+ * Type guard to help DatabaseTaskStore understand when database is PluginDatabaseManager vs. when database is a Knex instance.
  *
  * * @public
  */
@@ -81,7 +81,13 @@ function isPluginDatabaseManager(
 
 const parseSqlDateToIsoString = <T>(input: T): T | string => {
   if (typeof input === 'string') {
-    return DateTime.fromSQL(input, { zone: 'UTC' }).toISO();
+    const parsed = DateTime.fromSQL(input, { zone: 'UTC' });
+    if (!parsed.isValid) {
+      throw new Error(
+        `Failed to parse database timestamp '${input}', ${parsed.invalidReason}: ${parsed.invalidExplanation}`,
+      );
+    }
+    return parsed.toISO()!;
   }
 
   return input;
diff --git a/plugins/scaffolder/src/components/ListTasksPage/columns/CreatedAtColumn.test.tsx b/plugins/scaffolder/src/components/ListTasksPage/columns/CreatedAtColumn.test.tsx
index a30c1d370b..9cd1353ae1 100644
--- a/plugins/scaffolder/src/components/ListTasksPage/columns/CreatedAtColumn.test.tsx
+++ b/plugins/scaffolder/src/components/ListTasksPage/columns/CreatedAtColumn.test.tsx
@@ -23,7 +23,7 @@ import { DateTime } from 'luxon';
 describe('<CreatedAtColumn />', () => {
   it('should render the column with the time', async () => {
     const props = {
-      createdAt: DateTime.now().toISO(),
+      createdAt: DateTime.now().toISO()!,
     };
 
     const { getByText } = await renderInTestApp(<CreatedAtColumn {...props} />);
diff --git a/plugins/sentry/src/components/SentryIssuesTable/SentryIssuesTable.test.tsx b/plugins/sentry/src/components/SentryIssuesTable/SentryIssuesTable.test.tsx
index 5bf6b1e92b..6e04e65ef0 100644
--- a/plugins/sentry/src/components/SentryIssuesTable/SentryIssuesTable.test.tsx
+++ b/plugins/sentry/src/components/SentryIssuesTable/SentryIssuesTable.test.tsx
@@ -63,7 +63,7 @@ describe('SentryIssuesTable', () => {
         },
         count: '101',
         userCount: 202,
-        lastSeen: DateTime.now().toISO(),
+        lastSeen: DateTime.now().toISO()!,
       },
     ];
     const table = await renderInTestApp(
diff --git a/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.test.ts b/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.test.ts
index 3cf6d08c65..d778e84c79 100644
--- a/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.test.ts
+++ b/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.test.ts
@@ -74,13 +74,13 @@ const secondSchema = {
   }),
 };
 
-const now = DateTime.now().toISO();
+const now = DateTime.now().toISO()!;
 const shortlyInTheFuture = DateTime.now()
   .plus(Duration.fromMillis(555))
-  .toISO();
+  .toISO()!;
 const farInTheFuture = DateTime.now()
   .plus(Duration.fromMillis(555666777))
-  .toISO();
+  .toISO()!;
 
 const facts = [
   {
@@ -127,13 +127,13 @@ const sameFactsDiffDateSchema = {
   }),
 };
 
-const sameFactsDiffDateNow = DateTime.now().toISO();
+const sameFactsDiffDateNow = DateTime.now().toISO()!;
 const sameFactsDiffDateNearFuture = DateTime.now()
   .plus(Duration.fromMillis(555))
-  .toISO();
+  .toISO()!;
 const sameFactsDiffDateFuture = DateTime.now()
   .plus(Duration.fromMillis(1000))
-  .toISO();
+  .toISO()!;
 
 const multipleSameFacts = [
   {
diff --git a/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.ts b/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.ts
index c8f098a895..761a6bd273 100644
--- a/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.ts
+++ b/plugins/tech-insights-backend/src/service/persistence/TechInsightsDatabase.ts
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { Knex } from 'knex';
 import {
   FactLifecycle,
@@ -105,12 +106,13 @@ export class TechInsightsDatabase implements TechInsightsStore {
     if (facts.length === 0) return;
     const currentSchema = await this.getLatestSchema(id);
     const factRows = facts.map(it => {
+      const ts = it.timestamp?.toISO();
       return {
         id,
         version: currentSchema.version,
         entity: stringifyEntityRef(it.entity),
         facts: JSON.stringify(it.facts),
-        ...(it.timestamp && { timestamp: it.timestamp.toISO() }),
+        ...(ts && { timestamp: ts }),
       };
     });
 
diff --git a/plugins/xcmetrics/src/components/BuildList/BuildList.test.tsx b/plugins/xcmetrics/src/components/BuildList/BuildList.test.tsx
index 94178d0388..ee22647b2b 100644
--- a/plugins/xcmetrics/src/components/BuildList/BuildList.test.tsx
+++ b/plugins/xcmetrics/src/components/BuildList/BuildList.test.tsx
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import React from 'react';
 import { renderInTestApp, TestApiProvider } from '@backstage/test-utils';
 import { BuildList } from './BuildList';
diff --git a/plugins/xcmetrics/src/components/BuildList/BuildList.tsx b/plugins/xcmetrics/src/components/BuildList/BuildList.tsx
index 5a6e1bd322..20924b181b 100644
--- a/plugins/xcmetrics/src/components/BuildList/BuildList.tsx
+++ b/plugins/xcmetrics/src/components/BuildList/BuildList.tsx
@@ -39,8 +39,8 @@ export const BuildList = () => {
   const tableRef = useRef<any>();
 
   const initialFilters = {
-    from: DateTime.now().minus({ years: 1 }).toISODate(),
-    to: DateTime.now().toISODate(),
+    from: DateTime.now().minus({ years: 1 }).toISODate()!,
+    to: DateTime.now().toISODate()!,
   };
 
   const [filters, setFilters] = useState<BuildFilters>(initialFilters);
diff --git a/yarn.lock b/yarn.lock
index 7437bf7049..5aefa381ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -17819,9 +17819,9 @@ __metadata:
   linkType: hard
 
 "@types/luxon@npm:*, @types/luxon@npm:^3.0.0":
-  version: 3.2.0
-  resolution: "@types/luxon@npm:3.2.0"
-  checksum: 051bfbf841c6ce98728df6538342ce4aaddfcf0ec6e8b473e0195dcfc3ba6b1fe4b3ce17f2ba6d25344f41cb70032c1debe96da9e384e5f6e639665c1e6d368c
+  version: 3.3.2
+  resolution: "@types/luxon@npm:3.3.2"
+  checksum: b9111132720eae0269538872a5a496b29587ecfc8edc3b0ff7d269aa93a5ff00a131b23d1e9d1f12ec39f2c779ad21bd8d9f90b122c85a182771aabde7f676b8
   languageName: node
   linkType: hard
 
@@ -32024,9 +32024,9 @@ __metadata:
   linkType: hard
 
 "luxon@npm:^3.0.0, luxon@npm:^3.2.1, luxon@npm:^3.3.0":
-  version: 3.3.0
-  resolution: "luxon@npm:3.3.0"
-  checksum: 50cf17a0dc155c3dcacbeae8c0b7e80db425e0ba97b9cbdf12a7fc142d841ff1ab1560919f033af46240ed44e2f70c49f76e3422524c7fc8bb8d81ca47c66187
+  version: 3.4.2
+  resolution: "luxon@npm:3.4.2"
+  checksum: efefdfaea90f4c8e502db8eb255385e6dac6733b6a9e1372eaf1a866cc1118363e235a3f6df505b837abc8bbcdfd8f0718a8de387b80cef9ee624d8791ca0844
   languageName: node
   linkType: hard