Thinking about it, when I used the keil compiler before, I also had such a problem:
The first time I saw "1 Error(s)", I subconsciously thought that my program had made an error, and I couldn't find it after searching for a long time.
After looking at it more, I found that this error can be completely ignored, because the required .bin and .hex files have already been generated.
And this error is just that the COPY.BAT file was not generated, and I don't need this file.
But the base bones of obsessive-compulsive disorder are itching, and it is uncomfortable to see an error hanging.
In the Option, I unchecked "Run #2".
Just compile and generate the unnecessary COPY.BAT file without parameters.
Compile it again at this time, and it will pass with 0 error.