programing problem

Please!! Urgent help needed!! What does this mean and what can i do to get ride of it. I am using robotC programing with mechanum wheels

I am seeing a broken link in your message and I can’t access it.
First thing i would check would be the orientation of the wheels. The rollers should make a diamond on the floor:
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Like so. If that doesn’t fix it tip the robot back and make sure that all the wheels are turning the correct way. Without more info I can’t help much more, sorry.