phacility/phabricator · error · PhabricatorFileStorageConfigurationException

Storage engine '%s' executed %s but did not return a valid h

Error message

Storage engine '%s' executed %s but did not return a valid handle ('%s') to the data: it must be nonempty and no longer than 255 characters.

What it means

Error "Storage engine '%s' executed %s but did not return a valid handle ('%s') to the data: it must be nonempty and no longer than 255 characters." thrown in phacility/phabricator.

Source

Thrown at src/applications/files/storage/PhabricatorFile.php:557

    PhabricatorFileStorageEngine $engine,
    $data,
    array $params) {

    $engine_class = get_class($engine);

    $format = $this->newStorageFormat();

    $data_iterator = array($data);
    $formatted_iterator = $format->newWriteIterator($data_iterator);
    $formatted_data = $this->loadDataFromIterator($formatted_iterator);

    $integrity_hash = $engine->newIntegrityHash($formatted_data, $format);

    $data_handle = $engine->writeFile($formatted_data, $params);

    if (!$data_handle || strlen($data_handle) > 255) {
      // This indicates an improperly implemented storage engine.
      throw new PhabricatorFileStorageConfigurationException(
        pht(
          "Storage engine '%s' executed %s but did not return a valid ".
          "handle ('%s') to the data: it must be nonempty and no longer ".
          "than 255 characters.",
          $engine_class,
          'writeFile()',
          $data_handle));
    }

    $engine_identifier = $engine->getEngineIdentifier();
    if (!$engine_identifier || strlen($engine_identifier) > 32) {
      throw new PhabricatorFileStorageConfigurationException(
        pht(
          "Storage engine '%s' returned an improper engine identifier '{%s}': ".
          "it must be nonempty and no longer than 32 characters.",
          $engine_class,
          $engine_identifier));
    }

View on GitHub (pinned to 5720a38cfe)

When it happens

Trigger: Thrown at src/applications/files/storage/PhabricatorFile.php:557 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of phacility/phabricator@5720a38cfe (2026-08-21). Data as JSON: /api/errors/a6136b9fc0facaea. Report an issue: GitHub.