getgrav/grav · error · RuntimeException

Media has no thumbnail set

Error message

Media has no thumbnail set

What it means

Error "Media has no thumbnail set" thrown in getgrav/grav.

Source

Thrown at system/src/Grav/Common/Page/Medium/Link.php:45

    use ParsedownHtmlTrait;

    /** @var array */
    protected $attributes = [];
    /** @var MediaObjectInterface|MediaLinkInterface */
    protected $source;

    /**
     * Construct.
     * @param array  $attributes
     * @param MediaObjectInterface $medium
     */
    public function __construct(array $attributes, MediaObjectInterface $medium)
    {
        $this->attributes = $attributes;

        $source = $medium->reset()->thumbnail('auto')->display('thumbnail');
        if (!$source instanceof MediaObjectInterface) {
            throw new RuntimeException('Media has no thumbnail set');
        }

        $source->set('linked', true);

        $this->source = $source;
    }

    /**
     * Get an element (is array) that can be rendered by the Parsedown engine
     *
     * @param  string|null  $title
     * @param  string|null  $alt
     * @param  string|null  $class
     * @param  string|null  $id
     * @param  bool $reset
     * @return array
     */
    public function parsedownElement($title = null, $alt = null, $class = null, $id = null, $reset = true)

View on GitHub (pinned to 6040efed04)

When it happens

Trigger: Thrown at system/src/Grav/Common/Page/Medium/Link.php:45 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of getgrav/grav@6040efed04 (2026-08-17). Data as JSON: /api/errors/aea5b0ef923c1f1f. Report an issue: GitHub.