Crashes on mutli-node.js system

[wkande]

Running the following on a single Node.js server is fine.

console.log('create PDF');
pdf.create(html).toBuffer(function(err, buffer){
//console.log('This is a buffer:', Buffer.isBuffer(buffer));
console.log('create PDF async call returned');
try{
posterBuffer = buffer;
callback();
}
catch (err){
callback( err );
}
});

But if you have two servers behind an HAPROXY load balancer both servers crash with (no state):

* START ERROR***
Un-Caught exception (reported from app.js):
{ [Error: write EPIPE] code: 'EPIPE', errno: 'EPIPE', syscall: 'write' }
Error: write EPIPE
at exports._errnoException (util.js:746:11)
at WriteWrap.afterWrite (net.js:775:14)
****************** END ERROR ********************

I read a post about a double callback failure with phantom but now I cannot find it again.

Server OS Ubuntu 14.0.4
Node 12.5

[marcbachmann]

Hehe, the problem is gone?

[fakenickels]

@wkande the problem is gone?
how did you solve it?

[marcbachmann]

There was never a problem like this (the one in the issue title). EPIPE means that no phantomjs binary is present. So npm install failed somehow.

[fakenickels]

Oh, I solved it!
I just added phantomjs@1.9.16 in my project package.json and it worked.
@marcbachmann maybe you can replace "optionalDependencies" by "dependencies" in node-html-pdf's package.json to solve this problem.