Error about process L1C to L2A by sen2cor

Hi all,

I got an error when I tried to process L1C to L2A by sen2cor. The result shows # Application terminated with at least one error.
Process exited with value 1 #

However I still got the output L2A product. But it shows almost the same with L1C image and doesn’t seem to be done with atmospheric correction. So I wonder what’s the problem with this situation?