CodeAcademy : Jamming Project Bug 34 = (Cannot read property 'map' of undefined) Fixed.

CodeAcademy : Jamming Project Bug 34 = (Cannot read property 'map' of undefined) Fixed.

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How to fix the "Type Error: Cannot read property 'map' of undefined? (2 Solutions!!)
How to fix the "Type Error: Cannot read property 'map' of undefined? (2 Solutions!!)
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