Fatal error: Uncaught Error: Call to undefined function is_language() in /wp-content/plugins/oxygen/component-framework/components/classes/code-block.class.php(133) : eval()'d code:2 Stack trace: #0 /wp-content/plugins/oxygen/component-framework/components/classes/code-block.class.php(133): eval() #1 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_Code_Block->add_shortcode() #2 /wp-content/plugins/oxygen/component-framework/components/classes/div-block.class.php(48): do_oxygen_elements() #3 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_DIV_Block->add_shortcode() #4 /wp-content/plugins/oxygen/component-framework/components/classes/div-block.class.php(48): do_oxygen_elements() #5 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_DIV_Block->add_shortcode() #6 /wp-content/plugins/oxygen/component-framework/components/classes/div-block.class.php(48): do_oxygen_elements() #7 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_DIV_Block->add_shortcode() #8 /wp-content/plugins/oxygen/component-framework/components/classes/section.class.php(70): do_oxygen_elements() #9 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_Section->add_shortcode() #10 /wp-content/plugins/oxygen/component-framework/components/classes/reusable.class.php(74): do_oxygen_elements() #11 /wp-content/plugins/oxygen/component-framework/includes/templates.php(76): CT_Reusable->add_shortcode() #12 /wp-content/plugins/oxygen/component-framework/includes/templates.php(109): do_oxygen_elements() #13 /wp-content/plugins/oxygen/component-framework/includes/templates.php(183): ct_template_output() #14 /wp-includes/class-wp-hook.php(324): ct_templates_buffer_start() #15 /wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #16 /wp-includes/plugin.php(517): WP_Hook->do_action() #17 /wp-content/plugins/oxygen/component-framework/component-init.php(1273): do_action() #18 /wp-includes/class-wp-hook.php(324): oxy_print_cached_css() #19 /wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #20 /wp-includes/plugin.php(517): WP_Hook->do_action() #21 /wp-includes/general-template.php(3064): do_action() #22 /wp-content/plugins/oxygen/component-framework/oxygen-main-template.php(10): wp_head() #23 /wp-includes/template-loader.php(106): include('...') #24 /wp-blog-header.php(19): require_once('...') #25 /index.php(17): require('...') #26 {main} thrown in /wp-content/plugins/oxygen/component-framework/components/classes/code-block.class.php(133) : eval()'d code on line 2