asdoc for nested regression tables

Dear professor, In our empirical methods course we sometimes also illustrate the use of asdoc in Stata.I was running a do file to export regression output, getting an error using asdoc with the nest option. Reviewing the help file, using the example 25

sysuse auto, clear
asdoc reg price mpg rep78, nest replace

I unfortunately get the following output with error in my Stata 15.1 Is this a bug? Is there a solution to create the table? Kind regards, Erik | Senior Lecturer Economics