Allure empty report being generated using Karma

I'm using the following plugin

However after generating the report, which is the following ,please note that it was a test test (pun non intended)

<?xml version="1.0" encoding="UTF-8"?>
<ns2:test-suite xmlns:ns2="urn:model.allure.qatools.yandex.ru" start="1413502062818" stop="1413502063182">
    <title>Car</title>
    <test-cases start="1413502062834" stop="1413502062840" status="passed">
        <title>should return null</title>
        <description>Something</description>
        <steps start="1413502062817" stop="1413502062817" status="passed">
            <title>Create an empty car and return it</title>
        </steps>
        <steps start="1413502062828" stop="1413502062828" status="passed">
            <title>Create an empty car and return it</title>
        </steps>
    </test-cases>
    <test-cases start="1413502062867" stop="1413502062880" status="passed">
        <title>should return null</title>
        <description>Something</description>
        <steps start="1413502062867" stop="1413502062867" status="passed">
            <title>Create an empty car and return it</title>
        </steps>
    </test-cases>
    <test-cases start="1413502062818" stop="1413502063182" status="passed">
        <title>should return null</title>
    </test-cases>
</ns2:test-suite>

And using allure generate "" in the location of the xml file, the following is generated.

Any kind of help is highly appreciated, thank you!