Sense Hat error - Failed to initialise colour sensor?

[/RaspberryPi]

Hello, hope I can post this here!
Just picked up a sensehat and its awesome, but on any simple script I run I get the error:
WARING:root:Failed to initialise TCS34725 colour sensor. (sensor not present)
I can't see anything about there being a colour sensor, but want to make sure this isn't a faulty unit.
Not a major issue I suppose if I can't get rid of the error, as my code is still running. But why am I getting this, and why can't I find anything on google about it is my question!
Any help would be appreciated!

submitted by /u/RadicalBraj
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