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    This seems to happen often where I pass the test cases and then fail on submission. Here is the latest one of these..
    Test Passed: Value == true
    Test Passed: Value == true
    Test Passed: Value == true
    Test Passed: Value == true
    TypeError: Cannot read property 'constructor' of undefined
    at Function.Array.isArray

    Why can I use constructor to pass the tests but it does not work upon submission?