Flywheel hosting/ImageMagick causing a fatal error upon uploading PDF translations

Overview of the issue

If you are using Flywheel hosting or ImageMagick, uploading a PDF to your WordPress library gives you a fatal error:

PHP Fatal error: Uncaught Error: Cannot use object of type WP_Error as array in /www/wp-content/plugins/wpml-media-translation/classes/media-translation/class-wpml-media-attachment-image-update.php:61

Workaround

1. Make a full backup of your site.
2. Edit /wp-content/plugins/wpml-media-translation/classes/media-translation/class-wpml-media-attachment-image-update.php, line 49-76
3. Change:

   				if ( wp_image_editor_supports( array( 'mime_type' => $file['type'] ) ) ) {
   
   					$editor = wp_get_image_editor( $file['file'] );
   
   					if ( ! is_wp_error( $editor ) ) {
   
   						$size = $editor->get_size();
   						if ( $size['width'] > 150 || $size['height'] > 150 ) {
   							$resizing = $editor->resize( 150, 150, true );
   
   							if ( is_wp_error( $resizing ) ) {
   								wp_send_json_error( $resizing->get_error_message() );
   							}
   						}
   						$thumb = $editor->save();
   
   						if ( ! empty( $thumb ) ) {
   							$uploads_dir = wp_get_upload_dir();
   
   							$thumb_url  = $uploads_dir['baseurl'] . $uploads_dir['subdir'] . '/' . $thumb['file'];
   							$thumb_path = $thumb['path'];
   						}
   					} else {
   						wp_send_json_error( __( 'Failed to load the image editor', 'wpml-media' ) );
   					}
   				} elseif ( 0 === strpos( $file['type'], 'image/' ) ) {
   

   To:

   				if ( wp_image_editor_supports( array( 'mime_type' => $file['type'] ) ) ) {
   
                       if ( ! extension_loaded( 'imagick' ) && ($file_array["type"] !== "application/pdf")) {
   
                           $editor = wp_get_image_editor($file['file']);
   
                           if (!is_wp_error($editor)) {
   
                               $size = $editor->get_size();
                               if ($size['width'] > 150 || $size['height'] > 150) {
                                   $resizing = $editor->resize(150, 150, true);
   
                                   if (is_wp_error($resizing)) {
                                       wp_send_json_error($resizing->get_error_message());
                                   }
                               }
                               $thumb = $editor->save();
   
                               if (!empty($thumb)) {
                                   $uploads_dir = wp_get_upload_dir();
   
                                   $thumb_url = $uploads_dir['baseurl'] . $uploads_dir['subdir'] . '/' . $thumb['file'];
                                   $thumb_path = $thumb['path'];
                               }
                           } else {
                               wp_send_json_error(__('Failed to load the image editor', 'wpml-media'));
                           }
                       }
   				} elseif ( 0 === strpos( $file['type'], 'image/' ) ) {