Custom field block hows date not formated from an ACF field

Solved modifying the post-custom-field.php template.

<?php

//extract styles & classes
extract($extra_attr);
?>

<div class="<?php echo esc_attr( $wrapper_class ); ?>" <?php if ( !empty($wrapper_style) ) { ?> style="<?php echo esc_attr($wrapper_style); ?>" <?php } ?>>
    <?php if ( !empty($attributes['customField'] ) ) {
		/* ORIGINAL CODE
        echo get_post_meta( get_the_ID(), esc_attr( $attributes['customField'] ), true ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
        */
        $cfield=get_post_meta( get_the_ID(), esc_attr( $attributes['customField'] ), true );
        if (!empty($cfield)){
            if(strlen($cfield) == 2){    
                $term= get_term($cfield);
                echo $term->slug;
            }else {
                if (strlen($cfield)==8){
                    $year=substr($cfield,0,4);
                    $month=substr($cfield,4,2);
                    setlocale(LC_TIME, 'es_ES.UTF-8');   
                    $dateObj   = DateTime::createFromFormat('!m', $month);
                    $timestamp=strtotime($cfield);
                    echo date_i18n("F Y ",$timestamp);                    
                }
            }
        }
    } ?>
</div>

Marking as solved, please.