icc2出现there are undefined voltages in setup

"There are undefined voltages in setup" error message indicates that there are voltage levels in the design that have not been properly defined. This could be due to missing power supply connections, floating pins, or incorrect pin assignments.

To resolve this error, you can start by checking the power supply connections and ensuring that all power pins are connected to the appropriate power source. You should also check the pin assignments and make sure that all pins have been properly assigned in the design.

If the issue persists, you may need to review the design and ensure that all signals have been properly defined and connected. This may involve checking the pin assignments, signal names, and signal connections in the design. Additionally, you can try running a design rule check (DRC) to identify any other potential issues in the design that could be causing the problem.