Warning: Illegal offset type in isset or empty in /home/www/fab9b406da9e639353c2

Hello, since i installed the multilingual plugin WPML i’m having this warning message in every categories page.

When i review the code this is what i see in the lines of the warning:

/*if ( $element_type ) {
				if ( isset( $wp_taxonomies[ $element_type ] ) ) {
					/** @var WPML_Term_Translation $wpml_term_translations */
					/*global $wpml_term_translations;
					$ret_element_id = is_taxonomy_translated( $element_type ) ? $wpml_term_translations->term_id_in( $element_id, $language_code ) : $element_id;
				} elseif ( isset( $wp_post_types[ $element_type ] ) ) {
					/** @var WPML_Post_Translation $wpml_post_translations */

Can anybody hel me find whats the problem??
Thanks, my website is online: http://www.geo-graficas.com