Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in Drupal\Component\Utility\Unicode::validateUtf8()

Patch created

Great!!!! It is working for me.

Unfortunately, this does not yet work as desired.
If you double-click on an existing embedded content to customize the content, the current plugin and its config are not pre-populated, but an initial dialog is called.

It seems to be a better approach to use:

$plugin_config = !empty($plugin_config) ? Xss::filter($plugin_config) : '';

instead of code line 72
$plugin_config = Xss::filter($plugin_config);

Fwiw, I was getting these issues due to a malformed array in my custom template. (Specifically the default_value for a text_format field, which has to be $this->configuration['']['value'], not $this->configuration['']. No patches were necessary.

Just as an fyi, to render a formatted field in the twig template, you will need to use this format:
{% set descriptionFormatted = {
'#type': 'processed_text',
'#text': description.value,
'#format': 'basic_html',
}
%}

{{ descriptionFormatted }}

Hey @cecrs,

thank you for your input and the great information!
I already have the default value, as you described, but I still get an error if I do not change the code, or do you think this is because of the

: NULL

This is the code for my fields in the buildConfigurationForm

  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    // Create empty options array
    $options = array();
    
    $langcodes = \Drupal::languageManager()->getLanguages();
    
    // Inject into the options array
    foreach ($langcodes as $langcode => $key) {
      $options[$langcode] = $langcode;
    }
    
    $form['language'] = [
      '#type' => 'select',
      '#title' => $this->t('Language'),
      '#default_value' => $this->configuration['language'],
      '#required' => TRUE,
      '#options' => $options,
      '#ajax' => [
        'callback' => [$this, 'updateText'],
        'event' => 'change',
        'wrapper' => 'text-field-wrapper',
        'progress' => [
          'type' => 'throbber',
          'message' => $this->t('Verifying entry...'),
        ],        
      ],
    ];
    
    $form['text'] = [
      '#type' => 'text_format',
      '#format' => 'full_html',
      '#title' => $this->t('Text'),
      '#default_value' => (isset($this->configuration['text']['value']) ? $this->configuration['text']['value'] : NULL),
      '#prefix' => '<div id="text-field-wrapper">',
      '#suffix' => '</div>',
    ];

    return $form;
  }

BR
Daniel

@Daniel

Possibly, I would suggest trying removing all except the minimal required config, clear cache see if it works. If it does, add things back one by one (clearing cache between each, natch) until it breaks. If not, the issue is somewhere else and my experience will be of no help... :P

Working example:

    $form['text'] = array(
      '#type' => 'text_format',
      '#title' => $this->t('Text'),
      '#format' => 'basic_html',
      '#default_value' => $this->configuration['text']['value'],
    );

@cecrs:

I have realized that this error occurs even without my custom module. So, just activate the CKEditor5 embedded content module and click the button to insert a template.

Here comes then this message, but also the above PHP errors.

Anybody got this fixed? After applying the patch the deprecation error is fixed, but as mentioned in comment #5 now we are not able to edit the existing embed content. When we double click on the existing embedded content its opening a new dialog instead of opening the dialog with the existing values

Thank you, I've incorporated the suggestions in the latest dev release. Feel free to reopen if this is still is an issue

Automatically closed - issue fixed for 2 weeks with no activity.