An error occurring only on 4,7 inch iPhones

Bugs
1

I made a variation of the example “Flappy”. I exported it to Xcode, and it works on any device, except the iPhone 6 and 6s (The Plus versions work perfectly)
This is the error:
Main:83: bad argument #1 to ‘random’ (number has no integer representation)
stack traceback:
[C]: in function ‘math.random’
Main:83: in function
‘spawnNext’
Main:49: in function ‘reset’
Main:14: in function ‘setup’

Does anybody know how to solve this?

2

You have to make the number in random an integer. You can do that by random(math.floor(number)) where number is whatever is in the random statement.