Thank you for the cooperation

I found that the execution location of KeepAlive is not the same as what you prompted.

Ups, I apologize, great you find it.

I followed the instructions to install app and run same function and got the same problem.

Please open console and go to this path (change the first part to the dir where you installed the app)
c:\jsreportapp\node_modules\puppeteer\.local-chromium\win64-706915\chrome-win\

and then try to run this
chrome --headless --print-to-pdf https://www.chromestatus.com/

this should create file output.pdf and chrome_debug.log in the same dir.
Did it work? Can you share the content of the chrome_debug.log?