Warning: Invalid argument supplied for foreach() in system/modules/download_area/templates/modules/mod_documenti.html5 on line 34

#0 system/modules/download_area/templates/modules/mod_documenti.html5(34): __error()
#1 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/vhosts...')
#2 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse()
#3 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse()
#4 system/modules/core/modules/Module.php(311): Contao\FrontendTemplate->parse()
#5 system/modules/download_area/modules/Documenti.php(75): Contao\Module->generate()
#6 system/modules/core/library/Contao/Controller.php(321): Documenti->generate()
#7 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule()
#8 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate()
#9 index.php(20): Contao\FrontendIndex->run()
#10 {main}