fix: File.file_url as empty string as fallback
fix: File.file_url as empty string as fallback

StrellaGroup/frappe,StrellaGroup/frappe,yashodhank/frappe,yashodhank/frappe,yashodhank/frappe,frappe/frappe,StrellaGroup/frappe,yashodhank/frappe,frappe/frappe,frappe/frappe