Advanced Custom Fields – Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in…

Visão geral do problema

O seguinte erro fatal pode ocorrer ao usar o plugin Advanced Custom Fields. O erro é observado especificamente com o PHP 8 ou superior:

Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in .../wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php:259

Solução alternativa

Certifique-se de ter um backup completo do seu site antes de prosseguir.

• Abra o arquivo …/wp-content/plugins/acfml/classes/class-wpml-acf-attachments.php.
• Localize a linha 28.
• Substitua:

  foreach ( $attachments as $key => $attachment_id ) {
  		$translated_attachments[ $key ] = apply_filters( 'wpml_object_id', $attachment_id, 'attachment', true );

• Por:

  foreach ( $attachments as $key => $attachment_id ) {
  	if (is_int($attachment_id)) {
  		$translated_attachments[ $key ] = apply_filters( 'wpml_object_id', $attachment_id, 'attachment', true );
  	}

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