Adds defensive coding to make sure warnings don't happen.

src/helpers/current-page-helper.php

@@ -482,10 +482,12 @@ protected function get_non_cached_date_archive_permalink() {
 	 * @return int The amoumt of queried terms.
 	 */
 	protected function count_queried_terms() {
-		$wp_query      = $this->wp_query_wrapper->get_main_query();
-		$term          = $wp_query->get_queried_object();
+		$wp_query = $this->wp_query_wrapper->get_main_query();
+		$term     = $wp_query->get_queried_object();
+
+
 		$queried_terms = $wp_query->tax_query->queried_terms;
-		if ( empty( $queried_terms[ $term->taxonomy ]['terms'] ) ) {
+		if ( is_null( $term ) || empty( $queried_terms[ $term->taxonomy ]['terms'] ) ) {
 			return 0;
 		}
 

src/presentations/indexable-term-archive-presentation.php

@@ -92,7 +92,7 @@ public function generate_meta_description() {
 	 * @return array The source.
 	 */
 	public function generate_source() {
-		if ( ! empty( $this->model->object_id ) ) {
+		if ( ! empty( $this->model->object_id ) || is_null( \get_queried_object() ) ) {
 			return \get_term( $this->model->object_id, $this->model->object_sub_type );
 		}
 
@@ -152,7 +152,7 @@ public function generate_robots() {
 		 * First we get the no index option for this taxonomy, because it can be overwritten the indexable value for
 		 * this specific term.
 		 */
-		if ( ! $this->taxonomy->is_indexable( $this->source->taxonomy ) ) {
+		if ( is_wp_error( $this->source ) || ! $this->taxonomy->is_indexable( $this->source->taxonomy ) ) {
 			$robots['index'] = 'noindex';
 		}
 
@@ -172,7 +172,7 @@ public function generate_robots() {
 	 * @return string The title.
 	 */
 	public function generate_title() {
-		if ( $this->model->title ) {
+		if ( is_wp_error( $this->source ) || $this->model->title ) {
 			return $this->model->title;
 		}
 
@@ -209,6 +209,10 @@ protected function is_multiple_terms_query() {
 			return false;
 		}
 
+		if ( is_wp_error( $this->source ) ) {
+			return false;
+		}
+
 		$queried_terms = $query->tax_query->queried_terms;
 
 		if ( empty( $queried_terms[ $this->source->taxonomy ]['terms'] ) ) {