Why does this simple code output an error. A fix and explanation would be preferred?

player = script.Parent.Parent
fix = script.Parent:clone()
while true do
wait(40)
script.Parent:remove()
fix.Parent = player
end

From what you've given us and what I've been able to understand,

Considering is one script.

Whats happening:

player = script.Parent.Parent --script.parent.parent is player
fix = script.Parent:clone() --script.Parent was cloned
while true do -- you started a loop
wait(40) --waited 40 seconds
script.Parent:remove() -- removed the scripts parent.
fix.Parent = player -- tried to put the clone into script.parent.parent
end -- ended

When you remove the scripts parent, you remove the script and it is unable to continue after that. So, did this error, or not do what you expected?