61c61,66 < + $query_string = \Drupal::state()->get('system.css_js_query_string') ?: '0'; --- > + if (defined('MAINTENANCE_MODE') && MAINTENANCE_MODE == 'install') { > + $query_string = base_convert(REQUEST_TIME, 10, 36); > + } > + else { > + $query_string = \Drupal::state()->get('system.css_js_query_string') ?: '0'; > + } 69,76c74 < @@ -1,5 +1,6 @@ < @@ -25,7 +25,12 @@ public function render(array $js_assets) { 81c79,84 < + $default_query_string = \Drupal::state()->get('system.css_js_query_string') ?: '0'; --- > + if (defined('MAINTENANCE_MODE') && MAINTENANCE_MODE == 'install') { > + $default_query_string = base_convert(REQUEST_TIME, 10, 36); > + } > + else { > + $default_query_string = \Drupal::state()->get('system.css_js_query_string') ?: '0'; > + }