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Abstract tool shows this warning

I am trying to generate .LEF file of a custom design inverter using Abstract tool.I used M2 M3 metal layers in this but when I passed this design it shows this

WARNING (ABS-245): Failed to perform the antennaSideArea calculations because the V2 layer does not have a thickness value specified. Specify the thickness value in the antenna subsection of foundry constraint group of the technology file.

What should I do to resolve this warning.

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