When everything is installed and setup regarding magick and if the Environment Variables path is also set, you should look at the installation folder which is usually located in C:Program Filesgsgs10.x .0bin. If there is no gs.exe and only gswin64.c.exe, copy that executable and change its name to gs.exe and readImage() will run the script.
With Laravel and php i have tried to convert pdf to png so i could use it for converting png image to zpl extension. Installing ghostscript for windows system didn’t help because file that are installed do not have proper name that class Imagick call and that name of executabel is “gs” and not “gswin64c”. Changing name help to solve problem and run ghostscript.