Attempt To Call Nil

when i run this

sleep(1)
--Wraps Peripherals
wm = peripheral.wrap("top")
mm = peripheral.wrap("bottom")
l1 = peripheral.wrap("computer_35")
l2 = peripheral.wrap("computer_34")
l3 = peripheral.wrap("computer_36")
l4 = peripheral.wrap("computer_37")
l5 = peripheral.wrap("computer_38")
r1 = peripheral.wrap("computer_39")
r2 = peripheral.wrap("computer_40")
r3 = peripheral.wrap("computer_41")
r4 = peripheral.wrap("computer_42")
r5 = peripheral.wrap("computer_43")
--Defines Variables
--Turns On All Computers
l1.turnOn()
l2.turnOn()
l3.turnOn()
l4.turnOn()
l5.turnOn()
r1.turnOn()
r2.turnOn()
r3.turnOn()
r4.turnOn()
r5.turnOn()
--Opens Channels
wm.open(0)
wm.open(1)
wm.open(2)
wm.open(3)
wm.open(4)
--Checks That The Modems Are The Right Ones
if wm.isWireless() == false then print("wm.err") end
if mm.isWireless() == true then print("mm.err") end
--rednet
rednet.open("bottom")
--Loop
--Sets Sign Text To Default
  wm.transmit(1,1,"Computer")
  wm.transmit(1,1,"Room")
  wm.transmit(2,2,"Armor")
  wm.transmit(2,2,"Room")
  wm.transmit(3,3,"Animal")
  wm.transmit(3,3,"Farms")
  wm.transmit(4,4,"Plant")
  wm.transmit(4,4,"Farms")
--Listens For rednet
  inp = rednet.receive(1)
--Decifers Rednet
 
--Redirects Rednet
  rednet.send(2,"fixme")
--end
--Closes Channels
  wm.closeAll()
--Terminates

it says
"Startup:8 :attempt to call nil

what did i do wrong. i have gone through it many times and found no flaws

Did you copy and paste the exact code you're using here, or did you re-type it?

The error is telling you that the eighth line of your script is attempting to call a function that doesn't exist. That's not possible within the code you're showing us.

If you still can't see the problem in the original code, I suggest using "pastebin put startup" and providing the ID that gives you here.

Bomb Bloke, on 21 March 2016 - 06:59 AM said:

The error is telling you that the eighth line of your script is attempting to call a function that doesn't exist. That's not possible within the code you're showing us.

If you still can't see the problem in the original code, I suggest using "pastebin put startup" and providing the ID that gives you here.

so it is just a bug/glitch

Indeed, your code is bugged - but it's difficult to make suggestions about what to do about it as the error you're showing us isn't from the code you're showing us.

Probably one of the peripheral.wrap function calls failed and returned nil. Try checking if you get a table instead of nil before calling functions.

l1 = peripheral.wrap("computer_35")
if l1 then
	l1.turnOn()
end
.
.

wm = peripheral.wrap("top")
if wm then
	wm.open(0)
	.
	.
end

Bomb Bloke, on 21 March 2016 - 06:59 AM said:

The error is telling you that the eighth line of your script is attempting to call a function that doesn't exist. That's not possible within the code you're showing us.

If you still can't see the problem in the original code, I suggest using "pastebin put startup" and providing the ID that gives you here.

It Did Not Work:(
same problem

Is computer_37 actually computer_37? Try clicking on the computer's modem to check the name shown in chat, then modify line 8 accordingly.

Duster, on 21 March 2016 - 12:22 PM said:

It Did Not Work:(
same problem

So you're saying you got the exact same error when trying to run the "pastebin" script?

I'm starting to think there's some sort of language barrier here - it may be a good idea to post a screenshot of what you typed and what the result was.

moTechPlz, on 21 March 2016 - 12:17 PM said:

Probably one of the peripheral.wrap function calls failed and returned nil. Try checking if you get a table instead of nil before calling functions.

ry00000, on 21 March 2016 - 12:40 PM said:

Is computer_37 actually computer_37? Try clicking on the computer's modem to check the name shown in chat, then modify line 8 accordingly.

I'm afraid you guys are on the wrong track; attempting to wrap a peripheral that doesn't exist won't immediately error; peripheral.wrap() simply returns nil, as opposed to the usual "table filled with functions".

Even if you later attempt to call a function inside of that non-table, you won't get an "attempt to call nil" - you'll get an "attempt to index nil".

Bomb Bloke, on 21 March 2016 - 01:34 PM said:

Duster, on 21 March 2016 - 12:22 PM said:

It Did Not Work:(
same problem

So you're saying you got the exact same error when trying to run the "pastebin" script?

I'm starting to think there's some sort of language barrier here - it may be a good idea to post a screenshot of what you typed and what the result was.

moTechPlz, on 21 March 2016 - 12:17 PM said:

Probably one of the peripheral.wrap function calls failed and returned nil. Try checking if you get a table instead of nil before calling functions.

ry00000, on 21 March 2016 - 12:40 PM said:

Is computer_37 actually computer_37? Try clicking on the computer's modem to check the name shown in chat, then modify line 8 accordingly.

I'm afraid you guys are on the wrong track; attempting to wrap a peripheral that doesn't exist won't immediately error; peripheral.wrap() simply returns nil, as opposed to the usual "table filled with functions".

Even if you later attempt to call a function inside of that non-table, you won't get an "attempt to call nil" - you'll get an "attempt to index nil".

thing that got wraped is not expected peripheral? function doesn't exist in this version of mod?

Lupus590, on 21 March 2016 - 01:47 PM said:

thing that got wraped is not expected peripheral?

As mentioned, if you attempt to wrap a peripheral that doesn't exist, peripheral.wrap() returns nil. This would not lead to an "attempt to call nil".

Lupus590, on 21 March 2016 - 01:47 PM said:

function doesn't exist in this version of mod?

Obviously some function somewhere doesn't exist; which one is entirely up in the air. The function called on line 8 of the displayed code obviously exists when the earlier lines call it, so…

Basically what Bomb Bloke is trying to convey is that somewhere you have a typo. Perhaps you did peripheral.warp, perhaps that isn't the first eight lines of your code given how there's a sleep right at the start. If anything just do what he asked and type this into your computer:

pastebin put Startup

And then give us that string of characters that it should print out, capitalization matters.

To Paste-bin

the code J2rXvfnd

If that's your file that was uploaded through cc's inbuilt pastebin script then that error shouldn't occur at all. Try restarting your in game computer and see if that fixes it, otherwise I have no clue what's going on.

it is on a server

the server restarts periodicly

Dragon53535, on 21 March 2016 - 08:18 PM said:

If that's your file that was uploaded through cc's inbuilt pastebin script then that error shouldn't occur at all. Try restarting your in game computer and see if that fixes it, otherwise I have no clue what's going on.

Go to your in game computer, the one this script is on, and press and hold ctrl and r.

the error only happens when it starts up
if i run the program after it starts up it is fine

also all the computers connected don't turn on. half turn off and the other half do nothing

Dragon53535, on 21 March 2016 - 08:33 PM said:

Go to your in game computer, the one this script is on, and press and hold ctrl and r.

yah and that did nothing. same error

Try adding this to the top of your script:

if not peripheral.wrap then
  if peripheral then
	os.unloadAPI("peripheral")
  end
  os.loadAPI("rom/apis/peripheral")
end

And see if that fixes your on startup error. Basically what this will do is make darn sure that the peripheral api is loaded.


Edit: You had mentioned you were on a server, so I assumed you thought that you could only restart it on the server restart.

i thought you meant the world. to restart the world.

Dragon53535, on 21 March 2016 - 08:49 PM said:

Edit: You had mentioned you were on a server, so I assumed you thought that you could only restart it on the server restart.

same error

Pastebin

Edit: Ill Try Running it Sp and see if that helps

Is this the script named "startup" on the computer?

Lyqyd, on 21 March 2016 - 09:04 PM said:

Is this the script named "startup" on the computer?

yes it is the startup script

I don't get this error at all, if peripheral.wrap is giving you an attempt to call nil and it's spelled correctly, then you'd think that it doesn't exist. But if the other calls that happen before it are not erroring so it must exist. Are there any script in rom/autorun ?

maby ill check

Dragon53535, on 21 March 2016 - 09:26 PM said:

I don't get this error at all, if peripheral.wrap is giving you an attempt to call nil and it's spelled correctly, then you'd think that it doesn't exist. But if the other calls that happen before it are not erroring so it must exist. Are there any script in rom/autorun ?

Edit: nothing in rom/autorun

Is there a disk drive attached to the network?

yes.. two

Bomb Bloke, on 21 March 2016 - 09:31 PM said:

Is there a disk drive attached to the network?

ohhh Isee
i have programs on those called startup

should i delete them?

edit Allbetter :P/> i was dumb

Yeaaah, that would cause your error entirely. Perhaps just rename them to something else.

If they're startup specific scripts for the other sets of computers, just wire those into a separate set of wire for those computers.

how do i close this?

they were old i removed them