[Cerrado] Uncaught TypeError: Illegal offset type in isset or empty

Estoy tratando de:
ver la informacion del proyecto. Pasa en todos los post de tipo 'project'
URL de (mi) sitio web donde aparece el problema:
enlace oculto
Yo esperaba ver:
el contenido del proyecto

En vez de eso, obtuve:
Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php:259 Stack trace: #0 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php(60): WPML_Element_Translation->maybe_populate_cache() #1 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php(4583): WPML_Element_Translation->element_id_in() #2 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/sitepress-multilingual-cms/inc/template-functions.php(381): SitePress->get_object_id() #3 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(324): wpml_object_id_filter() #4 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/plugin.php(205): WP_Hook->apply_filters() #5 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/dynamic-content-for-elementor/class/trait/i18n.php(51): apply_filters() #6 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/dynamic-content-for-elementor/modules/dynamic-tags/tags/acf-relationship.php(60): DynamicContentForElementor\Helper::wpml_translate_object_id() #7 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/dynamic-content-for-elementor/modules/dynamic-tags/tags/posts.php(76): DynamicContentForElementor\Modules\DynamicTags\Tags\AcfRelationship->get_args() #8 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/tag.php(35): DynamicContentForElementor\Modules\DynamicTags\Tags\Posts->render() #9 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/manager.php(216): Elementor\Core\DynamicTags\Tag->get_content() #10 [internal function]: Elementor\Core\DynamicTags\Manager->get_tag_data_content() #11 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/manager.php(109): call_user_func_array() #12 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/manager.php(74): Elementor\Core\DynamicTags\Manager->parse_tag_text() #13 [internal function]: Elementor\Core\DynamicTags\Manager->Elementor\Core\DynamicTags\{closure}() #14 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/manager.php(73): preg_replace_callback() #15 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/includes/controls/base-data.php(91): Elementor\Core\DynamicTags\Manager->parse_tags_text() #16 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/includes/base/controls-stack.php(1301): Elementor\Base_Data_Control->parse_tags() #17 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/includes/base/controls-stack.php(1148): Elementor\Controls_Stack->parse_dynamic_settings() #18 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/post.php(298): Elementor\Controls_Stack->get_parsed_dynamic_settings() #19 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/dynamic-css.php(32): Elementor\Core\Files\CSS\Post->render_styles() #20 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/dynamic-css.php(36): Elementor\Core\DynamicTags\Dynamic_CSS->render_styles() #21 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/dynamic-css.php(36): Elementor\Core\DynamicTags\Dynamic_CSS->render_styles() #22 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/post.php(178): Elementor\Core\DynamicTags\Dynamic_CSS->render_styles() #23 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/base.php(677): Elementor\Core\Files\CSS\Post->render_css() #24 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/base.php(180): Elementor\Core\Files\CSS\Base->parse_content() #25 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/base.php(130): Elementor\Core\Files\Base->update_file() #26 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/base.php(226): Elementor\Core\Files\CSS\Base->update() #27 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/post.php(201): Elementor\Core\Files\CSS\Base->enqueue() #28 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/dynamic-tags/manager.php(488): Elementor\Core\Files\CSS\Post->enqueue() #29 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(324): Elementor\Core\DynamicTags\Manager->after_enqueue_post_css() #30 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #31 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/plugin.php(517): WP_Hook->do_action() #32 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/base.php(273): do_action() #33 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor/core/files/css/post.php(201): Elementor\Core\Files\CSS\Base->enqueue() #34 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/elementor-pro/modules/theme-builder/classes/locations-manager.php(142): Elementor\Core\Files\CSS\Post->enqueue() #35 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(324): ElementorPro\Modules\ThemeBuilder\Classes\Locations_Manager->enqueue_styles() #36 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #37 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/plugin.php(517): WP_Hook->do_action() #38 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/script-loader.php(2262): do_action() #39 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts() #40 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #41 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/plugin.php(517): WP_Hook->do_action() #42 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/general-template.php(3052): do_action() #43 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/themes/figueras/header.php(24): wp_head() #44 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/template.php(790): require_once('...') #45 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/template.php(725): load_template() #46 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/general-template.php(48): locate_template() #47 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/themes/hello-elementor/index.php(15): get_header() #48 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-includes/template-loader.php(106): include('...') #49 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-blog-header.php(19): require_once('...') #50 /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/index.php(17): require('...') #51 {main} thrown in /var/www/vhosts/otzarreta.com/boring-mclean.185-92-244-129.plesk.page/wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php on line 259
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