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Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /lindexks/www/html/wp-content/themes/eflow/digitalflow/shop/search.php:35 Stack trace: #0 /lindexks/www/html/wp-content/themes/eflow/digitalflow/shop/search.php(35): array_keys(NULL) #1 [internal function]: DfElasticPress::{closure}(Array, Array) #2 /lindexks/www/html/wp-content/themes/eflow/digitalflow/shop/search.php(32): array_reduce(Array, Object(Closure), Array) #3 /lindexks/www/html/wp-includes/class-wp-hook.php(324): DfElasticPress::{closure}(Array, Array, Object(WP_Query)) #4 /lindexks/www/html/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #5 /lindexks/www/html/wp-content/plugins/elasticpress/includes/classes/Feature/Facets/Facets.php(653): apply_filters('ep_facet_query_...', Array, Array, Object(WP_Query)) #6 /lindexks/www/html/wp-includes/class-wp-hook.php(324): ElasticPress\Feature\Facets\Facets->apply_facets_filters(Array, Array, Object(WP_Query)) #7 /lindexks/www/html/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #8 /lindexks/www/html/wp-content/plugins/elasticpress/includes/classes/Indexable/Post/Post.php(1500): apply_filters('ep_post_filters', Array, Array, Object(WP_Query)) #9 /lindexks/www/html/wp-content/plugins/elasticpress/includes/classes/Indexable/Post/Post.php(930): ElasticPress\Indexable\Post\Post->parse_filters(Array, Object(WP_Query)) #10 /lindexks/www/html/wp-content/plugins/elasticpress/includes/classes/Indexable/Post/QueryIntegration.php(312): ElasticPress\Indexable\Post\Post->format_args(Array, Object(WP_Query)) #11 /lindexks/www/html/wp-includes/class-wp-hook.php(324): ElasticPress\Indexable\Post\QueryIntegration->get_es_posts(NULL, Object(WP_Query)) #12 /lindexks/www/html/wp-includes/plugin.php(256): WP_Hook->apply_filters(NULL, Array) #13 /lindexks/www/html/wp-includes/class-wp-query.php(3146): apply_filters_ref_array('posts_pre_query', Array) #14 /lindexks/www/html/wp-includes/class-wp-query.php(3824): WP_Query->get_posts() #15 /lindexks/www/html/wp-includes/class-wp.php(696): WP_Query->query(Array) #16 /lindexks/www/html/wp-includes/class-wp.php(816): WP->query_posts() #17 /lindexks/www/html/wp-includes/functions.php(1336): WP->main('') #18 /lindexks/www/html/wp-blog-header.php(16): wp() #19 /lindexks/www/html/index.php(18): require('/lindexks/www/h...') #20 {main} thrown in /lindexks/www/html/wp-content/themes/eflow/digitalflow/shop/search.php on line 35