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Error getting preview of file
Rest Response:
TypeScript
{
"message": "Server Error",
"code": 500,
"type": "general_unknown",
"version": "1.8.1"
}
Appwrite Logs
TypeScript
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
TL;DR
Error message "Server Error" (code 500) when trying to preview a file. Appwrite logs show an issue with an unknown attribute "transformedAt". Possible database error causing the problem.