attempt to get length of nil

I was trying to make something to send a file and it tell me this :

sendfile:8:attempt to get length of nil

LINE 8

Here is the pastebin:

https://pastebin.com/zvApK5w4

Sorry for my bad english and also i'm new in computercraft :)/>

Looks like you linked the wrong paste.

Bomb Bloke, on 25 November 2017 - 03:35 AM said:

Looks like you linked the wrong paste.

I solved the problem btw when i made the local = (…) as you can see i must put { instead of {

And i saw i put the wrong pastebin , sorry