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improved formatting, updated content and titles
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{
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"label": "Backend Issues"
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"label": "Backend Troubleshooting"
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}
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---
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keywords: ['database', 'listview', 'mode']
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slug: /why-your-listview-shows-a-gray-box-or-red-screen-in-flutterflow
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title: Why Your ListView Shows a Gray Box or Red Screen in FlutterFlow
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slug: /listview-gray-box-and-red-screen-errors-in-flutterflow
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title: ListView Gray Box and Red Screen Errors in FlutterFlow
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---
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# Why Your ListView Shows a Gray Box or Red Screen in FlutterFlow
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# ListView Gray Box and Red Screen Errors in FlutterFlow
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**Issue**
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A gray box means the backend query failed and couldn't return any result.
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**How to Know if Your Query is Working**
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**Verifying Query Functionality**
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- If the query is successful and returns items, you will see the list populated.
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- If there are no records matching the query, but the query itself is successful, you will see the **empty state** that you have configured for your list.
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**Troubleshooting Steps**
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If you are seeing a gray box and no filters or ordering are applied to your query, the issue is likely with the data itselfspecifically, **null values** in your database.
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If you are seeing a gray box and no filters or ordering are applied to your query, the issue is likely with the data itself, specifically **null values** in your database.
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Null values can cause FlutterFlow queries to fail.
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![](../assets/20250430121239967301.png)
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**How to check for null values**
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**How to Check for Null Values**
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- Inspect your data in Firebase for any fields that have null values.
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- If your dataset is small, you can use the FlutterFlow CMS to review the data.
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---
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keywords: ['listview', 'returning', 'only']
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slug: /listview-returning-only-one-item
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title: ListView Returning Only One Item
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---
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# ListView Returning Only One Item
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If your **ListView** is only returning one item in FlutterFlow, check the following possible causes:
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- **Use a Dynamic Widget**: Ensure you are using a dynamic widget such as **ListView**, **GridView**, **Row**, or **Column** to dynamically generate multiple children.
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- **Query for a List**: Confirm that your query retrieves a **list of documents** rather than a single record.
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- **Check Filters**: If you're applying filters, make sure that your Firestore database contains **multiple records** that satisfy the filter conditions.
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- **Sufficient Records**: Verify that your Firestore collection has **enough records** to display multiple items.
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- **List Type Field**: If you are querying a single field, ensure that it’s defined as a **ListType field** in both FlutterFlow and Firebase.
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By carefully reviewing these areas, you should be able to resolve the issue of your ListView returning only one item.

docs/troubleshooting/backend-issues/my_listview_is_only_returning_one_item.md

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docs/troubleshooting/backend-issues/troubleshooting_backend_issues_in_flutterflow.md renamed to docs/troubleshooting/backend-issues/resolving_backend_configuration_issues.md

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---
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keywords: ['backend', 'issues', 'troubleshooting']
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slug: /troubleshooting-backend-issues-in-flutterflow
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title: Troubleshooting Backend Issues in FlutterFlow
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keywords: ['backend', 'issues', 'configuration']
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slug: /resolving-backend-configuration-issues
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title: Resolving Backend Configuration Issues
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---
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# Troubleshooting Backend Issues in FlutterFlow
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# Resolving Backend Configuration Issues
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If you are facing issues related to the backend in FlutterFlow, follow these steps to ensure your Firebase setup is correctly configured:
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- **Cloud Functions Admin**
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- **Service Account User**
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**[Learn how to assign Firebase permissions.](/integrations/firebase/connect-to-firebase/#allow-flutterflow-to-access-your-project)**.
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Learn how to **[assign Firebase permissions](/integrations/firebase/connect-to-firebase/#allow-flutterflow-to-access-your-project)**.
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- **Update Firebase Rules**
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Ensure that your Firebase Firestore security rules are updated correctly.
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**[See how to update Firebase rules.](/integrations/database/cloud-firestore/firestore-rules/)**.
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Ensure that your Firebase Firestore security rules are updated correctly. See how to **[update Firebase rules](/integrations/database/cloud-firestore/firestore-rules/)**.
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After updating the rules, delete **[email protected]** from your authenticated users, redeploy the Firestore rules, and validate the schema again.
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If you have already completed the Firebase setup but continue to experience issues, remove existing permissions and complete the setup process from scratch.
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**[Follow Firebase setup instructions.](/integrations/firebase/connect-to-firebase/)**.
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**[Follow Firebase setup instructions](/integrations/firebase/connect-to-firebase/)**.
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- **Authorized Domains**
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docs/troubleshooting/backend-issues/update_document_action_fails_during_backend_call.md

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---
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keywords: ['call', 'document', 'backend']
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slug: /update-document-action-fails-during-backend-call
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title: Backend Call Update Document Action Not Working
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title: Update Document Action Fails During Backend Call
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---
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# Backend Call Update Document Action Not Working
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# Update Document Action Fails During Backend Call
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When performing the **Update Document** action, you may encounter a situation where the loading indicator appears but then stops without completing the action. This indicates that the update was unsuccessful. If the update succeeds, the next steps in your action flow, such as displaying an alert dialog, should execute automatically.
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After performing the update action, always verify that the data has been correctly updated in your database. If your document is not streamed in real-time within your app, the updated data may not immediately appear. Check the data in FlutterFlow CMS or directly in Firebase to confirm the update.
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**Why Does Updating a Document Fail?**
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**Causes of Document Update Failures**
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When the update action fails, the action flow stops, preventing any subsequent actions from executing.
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