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Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, array callback must have exactly two members in /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-hook.php:341 Stack trace: #0 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #1 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/kses.php(2657): apply_filters('safe_style_css', Array) #2 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-theme-json.php(3783): safecss_filter_attr('gap: 0.5em') #3 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-theme-json.php(1714): WP_Theme_JSON::is_safe_css_declaration('gap', '0.5em') #4 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-theme-json.php(1437): WP_Theme_JSON->get_layout_styles(Array, Array) #5 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/global-styles-and-settings.php(235): WP_Theme_JSON->get_stylesheet(Array, Array) #6 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/script-loader.php(2556): wp_get_global_stylesheet() #7 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-hook.php(341): wp_enqueue_global_styles('') #8 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array) #9 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #10 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/general-template.php(3213): do_action('wp_footer') #11 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-content/themes/salient/footer.php(62): wp_footer() #12 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/template.php(814): require_once('/home/demowebsi...') #13 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/template.php(749): load_template('/home/demowebsi...', true, Array) #14 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/general-template.php(92): locate_template(Array, true, true, Array) #15 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-content/themes/salient/index.php(156): get_footer() #16 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/template-loader.php(125): include('/home/demowebsi...') #17 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-blog-header.php(19): require_once('/home/demowebsi...') #18 /home/demowebsiteclien/helpnagar.demowebsiteclient.com/index.php(17): require('/home/demowebsi...') #19 {main} thrown in /home/demowebsiteclien/helpnagar.demowebsiteclient.com/wp-includes/class-wp-hook.php on line 341