Self HostedGeneralStorage

Error getting preview of file

Feb 25, 2026, 22:01Last activity 6 months ago

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Felipe AmaralOriginal post

Rank 2: Process

Feb 25, 2026, 21:56

Rest Response:

{
    "message": "Server Error",
    "code": 500,
    "type": "general_unknown",
    "version": "1.8.1"
}

Appwrite Logs

appwrite                            | [Error] Timestamp: 2026-02-25T21:51:22+00:00
appwrite                            | [Error] Method: GET
appwrite                            | [Error] URL: /v1/storage/buckets/:bucketId/files/:fileId/preview
appwrite                            | [Error] Type: Utopia\Database\Exception\Structure
appwrite                            | [Error] Message: Invalid document structure: Unknown attribute: "transformedAt"
appwrite                            | [Error] File: /usr/src/code/vendor/utopia-php/database/src/Database/Database.php
appwrite                            | [Error] Line: 5288

Summary

Error occurred due to missed migration from version 1.6. Solution: Run the 1.6 migration after taking a backup.

Steven

Feb 26, 2026, 01:59

This was added in 1.6. it seems you may have missed a migration from back then

Felipe Amaral

Rank 2: Process

Feb 26, 2026, 10:02

Is there any way to fix it?

Felipe Amaral

Rank 2: Process

Feb 26, 2026, 14:23