in_array(): Argument #2 ($haystack) must be of type array, Drupal\Core\Template\AttributeArray given

@geolim4, i have fixed the issue and created Patch. please review it once

Hello @abhishek_gupta1, ok for me, but wouldn't be better to use iterator_to_array() instead ?
Just in case $variables['attributes']['class'] could be a primitive array as well ?
Thank you.

The patch on #3 didn't work for me (Drupal 10.3.10).
The following did the trick for me:

if (isset($variables['attributes']) && $variables['attributes'] instanceof \Drupal\Core\Template\AttributeArray) {
      if ($variables['attributes']->hasClass('imce-page')) {
          return;
}
}

reroll patch and uploaded it here for ease of use

There are some phpcs errors which need some work