Attempt To Index (a nil value) help

Hello, I'm very new to Lua and this is my first time trying to use monitors. I'm trying to print simple text onto a monitor on the server I own (hosted by Akliz if that info is necessary), and I get an error: "startup:3: attempt to index (a nil value). But I don't get this problem on single player, my text prints fine with the same code there.

my code:

monitor = peripheral.wrap("right")

m.setTextScale(1)
m.write("Test")

Why am I getting this error, how can I fix it, and why is this only happening over multiplayer?

Thanks!

You wrap the monitor into the variable "monitor", then try to use it with the variable "m". You should pick one or the other and use it consistently.

As Lyqyd said, You're wrapping the monitor into the variable 'monitor' but you use it like you've wrapped it as 'm'
One way to fix it below, Or change all the m:s to monitor below.

local m = peripheral.wrap("right")

m.setTextScale( 1 )
m.write("Hello World!")

Hope this helped