I have a computer running Windows 10 Version 1903 and KB4517389 is installed on it. But the script resulted as it is not installed and found the corresponding vulnerabilities.
The script checks for the Gdiplus.dll under System32 and the vulnerable range is 10.0.18362.0 - 10.0.18362.417. I checked Gdiplus.dll under System32 and its version is 10.0.18362.418 as it should be because of the installed KB4517389. However the script reported the version as 10.0.18362.295 which is the version of Gdiplus.dll under SysWOW64.
So the script prints out the path of file checked as C:\Windows\system32\Jscript.dll but interestingly reported version is belong to C:\Windows\SysWOW64\Jscript.dll