about lua coroutine

[cnlibla]

A error sample:
c = coroutine.create(function() print(1) coroutine.yield() print(2) end)
coroutine.resume(c)
coroutine.resume(c)

[xooxdoo]

Tried:

c = coroutine.create(function() print(1) coroutine.yield() print(2) end)
coroutine.resume(c)
coroutine.resume(c)
print("hola");

got

Error in host call: vm is undefined
    shine.Coroutine._remove@http://moonshinejs.org/js/moonshine/moonshine.js:1637:2
    call_internal@http://moonshinejs.org/js/moonshine/moonshine.js:2890:15
    shine.Closure.prototype._executeInstruction@http://moonshinejs.org/js/moonshine/moonshine.js:1246:9
    run/<@http://moonshinejs.org/editor/editor.js:262:5
    success@http://moonshinejs.org/editor/editor.js:313:5
    anonymous/xhr.onload@http://moonshinejs.org/editor/editor.js line 304 > Function:33:19

    @/app/lua/40933-1476726075985.lua [(compiled code):3]