Community Feedback, Suggestions, and Questions Assura gives DRC error even for a single device

Assura gives DRC error even for a single device

Hi ,  I am manually trying to make layout but when I take PMOS or NMOS for layout from gpdk180nm and run Assura it will show DRC  even if the only single device is present in the whole layout. I don't know why it is happening. If someone has idea please help. Thanks in  advance

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