TypeError: Cannot read properties of null (reading 'intervalSeconds') on Explore -> Uptime page, resulting in unable to render the page

### Self-Hosted Version

26.4.1

### CPU Architecture

x86_64

### Docker Version

29.1.3

### Docker Compose Version

5.0.0

### Machine Specification

- [x] My system meets the minimum system requirements of Sentry

### Installation Type

Upgrade from previous releases

### Steps to Reproduce

Cause unknown

### Expected Result

Ability to see list of uptime items

### Actual Result

`./app/views/insights/uptime/components/overviewTimeline/overviewRow.tsx in OverviewRow at line 94:61`
```tsx
)}




{t('Checked every %s', getDuration(subscription.intervalSeconds))}

{summary === null ? null : summary === undefined ? (



```

---

`/api/0/organizations/XXX/detectors/?query=%21type%3Aissue_stream%20type%3Auptime`
```json
[
{
"id": "10",
"projectId": "6",
"name": "XXX",
"description": null,
"type": "uptime_domain_failure",
"workflowIds": [],
"owner": {
"type": "team",
"id": "3",
"name": "XXX"
},
"createdBy": null,
"dateCreated": "2026-02-11T10:46:47.852134Z",
"dateUpdated": "2026-02-11T10:46:47.852127Z",
"dataSources": [
{
"id": "6",
"organizationId": "1",
"type": "uptime_subscription",
"sourceId": "8",
"queryObj": null
}
],
"conditionGroup": {
"id": "8",
"organizationId": "1",
"logicType": "any",
"conditions": [
{
"id": "16",
"type": "eq",
"comparison": "failure",
"conditionResult": 75
},
{
"id": "17",
"type": "eq",
"comparison": "success",
"conditionResult": 0
}
],
"actions": []
},
"config": {
"mode": 1,
"environment": "production",
"downtimeThreshold": 3,
"recoveryThreshold": 1
},
"enabled": true,
"alertRuleId": null,
"ruleId": null,
"latestGroup": null,
"openIssues": 0
},
{
"id": "11",
"projectId": "6",
"name": "XXX",
"description": null,
"type": "uptime_domain_failure",
"workflowIds": [],
"owner": {
"type": "team",
"id": "3",
"name": "XXX"
},
"createdBy": null,
"dateCreated": "2026-02-11T10:46:47.856747Z",
"dateUpdated": "2026-02-11T10:46:47.856740Z",
"dataSources": [
{
"id": "7",
"organizationId": "1",
"type": "uptime_subscription",
"sourceId": "9",
"queryObj": null
}
],
"conditionGroup": {
"id": "9",
"organizationId": "1",
"logicType": "any",
"conditions": [
{
"id": "18",
"type": "eq",
"comparison": "failure",
"conditionResult": 75
},
{
"id": "19",
"type": "eq",
"comparison": "success",
"conditionResult": 0
}
],
"actions": []
},
"config": {
"mode": 1,
"environment": "production",
"downtimeThreshold": 3,
"recoveryThreshold": 1
},
"enabled": true,
"alertRuleId": null,
"ruleId": null,
"latestGroup": null,
"openIssues": 0
},
{
"id": "12",
"projectId": "6",
"name": "XXX",
"description": null,
"type": "uptime_domain_failure",
"workflowIds": [],
"owner": {
"type": "team",
"id": "3",
"name": "XXX"
},
"createdBy": null,
"dateCreated": "2026-02-11T10:46:47.861394Z",
"dateUpdated": "2026-02-11T10:46:47.861387Z",
"dataSources": [
{
"id": "8",
"organizationId": "1",
"type": "uptime_subscription",
"sourceId": "10",
"queryObj": null
}
],
"conditionGroup": {
"id": "10",
"organizationId": "1",
"logicType": "any",
"conditions": [
{
"id": "20",
"type": "eq",
"comparison": "failure",
"conditionResult": 75
},
{
"id": "21",
"type": "eq",
"comparison": "success",
"conditionResult": 0
}
],
"actions": []
},
"config": {
"mode": 1,
"environment": "production",
"downtimeThreshold": 3,
"recoveryThreshold": 1
},
"enabled": true,
"alertRuleId": null,
"ruleId": null,
"latestGroup": null,
"openIssues": 0
}
]
```

### Event ID

_No response_

### Page

`/organizations/XXX/insights/uptime/?statsPeriod=7d`