Printing a pos invoice

after submitting a pos invoice i get asked if i want to print it or make a new one in a message. so if i choose print, the link sent will be: “printview?doctype=Sales%20Invoice&name=SINV-00002&trigger_print=1&format=POS%20Invoice&no_letterhead=0” this is correct but i get a message that says: Page Missing or Moved
The page you are looking for is missing. This could be because it is moved or there is a typo in the link.
can someone help me to fix this?