thephpleague/flysystem · error · UnableToProvideChecksum

%s does not support providing checksums.

Error message

%s does not support providing checksums.

What it means

Error "%s does not support providing checksums." thrown in thephpleague/flysystem.

Source

Thrown at src/MountManager.php:315

    public function temporaryUrl(string $path, DateTimeInterface $expiresAt, array $config = []): string
    {
        /** @var FilesystemOperator $filesystem */
        [$filesystem, $path] = $this->determineFilesystemAndPath($path);

        if ( ! method_exists($filesystem, 'temporaryUrl')) {
            throw new UnableToGenerateTemporaryUrl(sprintf('%s does not support generating public urls.', $filesystem::class), $path);
        }

        return $filesystem->temporaryUrl($path, $expiresAt, $this->config->extend($config)->toArray());
    }

    public function checksum(string $path, array $config = []): string
    {
        /** @var FilesystemOperator $filesystem */
        [$filesystem, $path] = $this->determineFilesystemAndPath($path);

        if ( ! method_exists($filesystem, 'checksum')) {
            throw new UnableToProvideChecksum(sprintf('%s does not support providing checksums.', $filesystem::class), $path);
        }

        return $filesystem->checksum($path, $this->config->extend($config)->toArray());
    }

    private function mountFilesystems(array $filesystems): void
    {
        foreach ($filesystems as $key => $filesystem) {
            $this->guardAgainstInvalidMount($key, $filesystem);
            /* @var string $key */
            /* @var FilesystemOperator $filesystem */
            $this->mountFilesystem($key, $filesystem);
        }
    }

    private function guardAgainstInvalidMount(mixed $key, mixed $filesystem): void
    {
        if ( ! is_string($key)) {

View on GitHub (pinned to b277b5dc3d)

When it happens

Trigger: Thrown at src/MountManager.php:315 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of thephpleague/flysystem@b277b5dc3d (2026-08-17). Data as JSON: /api/errors/1b59b73bfe62de9f. Report an issue: GitHub.