append var if((!breadcrumb && !title) || overwrite_vars) - var breadcrumb = {0: {"name": cfg.app.name, "href": "/"}, 1: {"name": "500 - unknown error", "active": true}}; - var title = "I'm so sooryy"; .uk-flex.uk-margin-medium-top.uk-margin-medium-bottom div(class="uk-width-auto uk-width-1-4@s") .uk-flex.uk-flex-auto.uk-flex-column.uk-flex-center.uk-margin-left.uk-margin-right if(!error) h1 Me so sorry. p Could not find something which belongs to your interests. a(href="/").uk-button.uk-button-default Home else append var - breadcrumb[1] = {"name": error.statusCode + " - "+error.name, "active": true}; h1= error.statusCode + " Error: " + error.name p= error.error_description a(href="/").uk-button.uk-button-default Home div(class="uk-width-auto uk-width-1-4@s")