<path> attribute d: Unexpected end of attribute. Expected number (there is a number)

Looked at this, this, this and a bunch of other similar posts, where the issue is clear, that there was a letter or some other NaN error in the path. However...

Getting the error <path> attribute d: Unexpected end of attribute. Expected number, "…04,13.507 5.0004 on my <path>

The path is

<path 
    d="
        M31.9004,21.79
        L24.9004,29.79
        C24.6704,30.05 24.3494,30.2 24.0004,30.2
        C23.6504,30.2 23.3304,30.05 23.0994,29.79
        L16.0994,21.79
        C15.6604,21.29 15.7104,20.53 16.2104,20.1
        C16.7104,19.66 17.4694,19.71 17.9004,20.21
        L24.0004,27.18
        L30.0994,20.21
        C30.5304,19.71 31.2904,19.66 31.7904,20.1
        C32.2904,20.53 32.3394,21.29 31.9004,21.79
        M24.0004,5
        C13.5064,5 5.0004,13.507 5.0004
    "
    id="Color"
></path>`

which ends in 5.0004

Could someone please explain why it thinks there is a letter and not a number at the end, which is throwing this error? Is it possible it doesn't like the id in the path tags? if so, why is the error only pointing to the 5.0004?