I have built one project in node js. that create a pdf using puppeteer after submitting some from the HTML form. Everything is working fine in localhost. But, pdf in generating in google app engine environment after deploy. This project is on my github profile. Project on Github
puppeteer will not work same as expected with google app engine standard environment. You can use a flexible environment with Docker to work as expected. Or you can also use a compute engine with your own configurations.