Grover::JavaScript::Error (Navigation failed because browser has disconnected!)

[ckhall]

on Heroku, receiving this error when calling .to_pdf.

Followed all the instructions on setting up puppeteer on heroku. Any ideas here?

[abrom]

Going to need a lot more information.

1. have you followed all of the Heroku setup instructions? https://github.com/Studiosity/grover#running-on-heroku
2. what is your code setup before the call to .to_pdf?
3. what versions of things have you got installed? Grover? Puppeteer? Chromium?
4. what have you tried to figure this out?
5. have you tried searching the web for the error? I found many results. It may be that someone else has had this issue!

[ckhall]

@abrom

1. yes, to the letter.

2.     html = render_to_string('report.html.erb', layout: false)
       pdf = Grover.new(
         html,
         height: '11in',
         width: '8.5in',
         landscape: true,
         margin: {
           top: '0px',
           bottom: '0px',
           left: '0px',
           right: '0px'
         }
       ).to_pdf
   
   

3. grover v0.13.1, puppeteer v5.2.1, chromium ? (as i understand, puppeteer downloads latest?)
4. google "Navigation failed because browser has disconnected!" - nothing i have come across pertains to ruby or heroku.
5. see Add support for configuring a front and back cover page for PDFs #4.

[ckhall]

chromium version is Chromium 85.0.4182.0 (r782078) according to puppeteer changelog

[ckhall]

ok, figured it out. had to remove jemalloc buildpack. https://github.com/gaffneyc/heroku-buildpack-jemalloc.git specifically and not start processes using jemalloc.sh. may want to add a note to the readme for Heroku section.

[abrom]

I'll happily accept a PR ;)

[kladaFOX]

ok, figured it out. had to remove jemalloc buildpack. https://github.com/gaffneyc/heroku-buildpack-jemalloc.git specifically and not start processes using jemalloc.sh. may want to add a note to the readme for Heroku section.

Thanks MAN

[mikkelwf]

It's an issue that this doesn't work with jemalloc enabled

[bradherman]

It's an issue that this doesn't work with jemalloc enabled

Yeah it's a bummer that turning off jemalloc is the only option right now.

[Fire-Dragon-DoL]

Oh wow, I think it might be worth mentioning in the README. I just lost 2 days on this and I would have not have considered grover at all if I knew I couldn't use jemalloc (yes, it saves so much memory).

Thank you for opening this issue, I would have kept searching forever.