I think that error can happen when the output polygon is very complex and the DRC MAXIMUM VERTEX setting is too restrictive. Some shapes might be very large with thousands of holes. These might be difficult to output with the current DRC MAXIMUM VERTEX setting, or the MAXIMUM VERTICES option to DRC CHECK MAP.
Sometimes the number "199" (or even lower) is used for that setting. If your downstream tools can handle higher vertex counts you could experiment with different settings such as 4096 or 8000. Would you let us all know what you find?
Thanks for your help!
The error contain a lot of vertex and hole as you said.
After I set the DRC MAXIMUM VERTEX -> ALL, it solved the problem.