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Resolved

Reported for: WooCommerce Multilingual 4.8.0

Resolved in: WooCommerce Multilingual 4.9.0-b1

Symptoms

On sending an e-mail from YITH Affiliate, YITH Giftcards, WCFM plugins and possible some others, you can encounter an error like this one:

PHP Fatal error:  Uncaught Error: Call to a member function get_id() on array in /public_html/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php:395

Workaround

Our developers are working on fixing this problem.
As a temporary workaround, and only after you make sure you have a full backup of your site, you can go to wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php and change the code from:

	public function get_email_translated_string( $key,
			$object, $language)
		{

		$context = 'admin_texts_woocommerce_' . $object->id . '_settings';
		$name    = '[woocommerce_' . $object->id . '_settings]' . $key;

		return $this->wcml_get_translated_email_string( $context, $name, $object->object->get_id(), $language );

to this code:

public function get_email_translated_string( $key, $object, $language ) {
    $context = 'admin_texts_woocommerce_' . $object->id . '_settings';
    $name = '[woocommerce_' . $object->id . '_settings]' . $key;

    $order_id = false;

    if ( method_exists( $object->object, 'get_id' ) ) {
        $order_id = $object->object->get_id();
    }

    if ( is_array( $object->object ) && isset( $object->object['ID'] ) ) {
        $order_id = $object->object['ID'];
    }

    return $this->wcml_get_translated_email_string( $context, $name, $order_id, $language );
}