Fatal error: Uncaught  --> Smarty Compiler: Syntax error in template "file:/volume1/web/piwigo/themes/bootstrap_darkroom/template/header.tpl"  on line 170 "{combine_css path='themes/bootstrap_darkroom/'.$theme_config->custom_css order=20}"  - Unexpected ".", expected one of: "}" <-- 
  thrown in /volume1/web/piwigo/themes/bootstrap_darkroom/template/header.tpl on line 170