Help with Calculix

[mahesh]

Hi, I am brand new to calculix, and I am having trouble with an error:

Code:

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ERROR in gen3delem. The structure
        contains plane stress, plane
        strain or axisymmetric
        elements and should lie in
        the z=0 plane. This is at
        least not the case for node         708
I don't know how to fix this error. I have tried to google it but can't find a fix. Any help would be greatly appreciated.