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cadence gpdk45 off grid problem

Hello, i am trying to implement an iverter  design with Cadence gpdk45.

my snipping grid is defined 0.005, as shown bellow.

When i ran assura DRC with the rul file of gpdk45.

It says there is off grip shape on layers 14,12,8 although i didnt  touch those layers at all.(as shown bellow)

Where did i go wrong?

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