Report sales invoice not printing

hi after update i cant seem to print sales invoice report
i go to menu print the pop up box appears to say if i must print with letter head and must it be in portrait or landscape and if i click print nothing happens

any help would be appreciated

ok when i run this report i get this on the server if it will help
27.0.0.1 - - [27/Mar/2019 11:36:26] “POST /api/method/frappe.desk.reportview.get HTTP/1.1” 200 -
11:36:26 web.1 | 127.0.0.1 - - [27/Mar/2019 11:36:26] “GET /api/method/frappe.desk.reportview.get?doctype=Sales+Invoice&filters=%5B%5D&fields=%5B%22count(%60tabSales+Invoice%60.%60name%60)+as+total_count%22%5D&=1553678184366 HTTP/1.1" 200 -
11:36:58 web.1 | 127.0.0.1 - - [27/Mar/2019 11:36:58] "GET /api/method/frappe.desk.notifications.get_notifications?
=1553678184367 HTTP/1.1” 200 -
11:36:59 web.1 | 127.0.0.1 - - [27/Mar/2019 11:36:59] “POST /api/method/frappe.desk.reportview.get HTTP/1.1” 200 -
11:36:59 web.1 | 127.0.0.1 - - [27/Mar/2019 11:36:59] “GET /api/method/frappe.desk.reportview.get?doctype=Sales+Invoice&filters=%5B%5D&fields=%5B%22count(%60tabSales+Invoice%60.%60name%60)+as+total_count%22%5D&_=1553677013845 HTTP/1.1” 200 -

ok after updating again all working again