the package did not work on azure app service

[AriGabay]

Hi everyone,
I ran this function on the azure app service and got this error.

function :

const bufferPdf = async (html, options) => {
try {
return new Promise((resolve, reject) => {
pdf.create(html, options).toBuffer(function (err, buffer) {
if (err) {
return reject(err);
}
resolve(buffer);
});
});
} catch (e) {
console.log('ERROR [bufferPdf]:', e);
}
};

the Error :

2022-05-13T19:14:38.225244279Z: [ERROR] events.js:377
2022-05-13T19:14:38.225273879Z: [ERROR] throw er; // Unhandled 'error' event
2022-05-13T19:14:38.225279879Z: [ERROR] ^
2022-05-13T19:14:38.225283879Z: [ERROR]
2022-05-13T19:14:38.225287679Z: [ERROR] Error: write EPIPE
2022-05-13T19:14:38.225291579Z: [ERROR] at afterWriteDispatched (internal/stream_base_commons.js:156:25)
2022-05-13T19:14:38.225303979Z: [ERROR] at writeGeneric (internal/stream_base_commons.js:147:3)
2022-05-13T19:14:38.225309279Z: [ERROR] at Socket._writeGeneric (net.js:787:11)
2022-05-13T19:14:38.225313379Z: [ERROR] at Socket._write (net.js:799:8)
2022-05-13T19:14:38.225317179Z: [ERROR] at writeOrBuffer (internal/streams/writable.js:358:12)
2022-05-13T19:14:38.225321079Z: [ERROR] at Socket.Writable.write (internal/streams/writable.js:303:10)
2022-05-13T19:14:38.225325179Z: [ERROR] at PDF.PdfExec [as exec] (/home/site/wwwroot/node_modules/html-pdf/lib/pdf.js:156:15)
2022-05-13T19:14:38.225329079Z: [ERROR] at PDF.PdfToBuffer [as toBuffer] (/home/site/wwwroot/node_modules/html-pdf/lib/pdf.js:46:8)
2022-05-13T19:14:38.225332979Z: [ERROR] at /home/site/wwwroot/services/email.service.js:22:33
2022-05-13T19:14:38.225336679Z: [ERROR] at new Promise ()
2022-05-13T19:14:38.225341079Z: [ERROR] Emitted 'error' event on Socket instance at:
2022-05-13T19:14:38.225344879Z: [ERROR] at emitErrorNT (internal/streams/destroy.js:106:8)
2022-05-13T19:14:38.225348579Z: [ERROR] at emitErrorCloseNT (internal/streams/destroy.js:74:3)
2022-05-13T19:14:38.225352278Z: [ERROR] at processTicksAndRejections (internal/process/task_queues.js:82:21) {
2022-05-13T19:14:38.225356078Z: [ERROR] errno: -32,
2022-05-13T19:14:38.225369278Z: [ERROR] code: 'EPIPE',
2022-05-13T19:14:38.225373078Z: [ERROR] syscall: 'write'
2022-05-13T19:14:38.225376478Z: [ERROR] }

[MaurerKrisztian]

Hi. Locally working fine but I got the same error when the code is running on a Linode server. (and the server crashes somehow after pdf generate error 502 Bad Gateway)

events.js:377
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at afterWriteDispatched (internal/stream_base_commons.js:156:25)
    at writeGeneric (internal/stream_base_commons.js:147:3)
    at Socket._writeGeneric (net.js:798:11)
    at Socket._write (net.js:810:8)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at Socket.Writable.write (internal/streams/writable.js:303:10)
    at PDF.PdfExec [as exec] (/opt/app/node_modules/html-pdf/lib/pdf.js:156:15)
    at PDF.PdfToBuffer [as toBuffer] (/opt/app/node_modules/html-pdf/lib/pdf.js:46:8)
    at /opt/app/dist/template/services/PdfService.js:8:30
    at new Promise (<anonymous>)
Emitted 'error' event on Socket instance at:
    at emitErrorNT (internal/streams/destroy.js:106:8)
    at emitErrorCloseNT (internal/streams/destroy.js:74:3)
    at processTicksAndRejections (internal/process/task_queues.js:82:21) {
  errno: -32,
  code: 'EPIPE',
  syscall: 'write'

code: https://github.com/MaurerKrisztian/template-api-tm

[MaurerKrisztian]

@AriGabay I found some solution:
If I understand correctly the problem is this package need fonts and try to reach phantomJs but not exist in the environment
#612 (comment)
#612 (comment)
#35 (comment)

[chacabuk]

Exactly same issue...
I cant solve it...
I try to add config option in many ways this no luck...

phantomPath: "../../../node_modules/phantomjs-prebuilt/bin/phantomjs", 

phantomPath: "../../../node_modules/phantomjs/bin/phantomjs",

phantomPath: "./node_modules/phantomjs/bin/phantomjs",

[shreyasgombi]

Any luck? Facing a similar issue on my Azure App Service with Node 18 - LTS (18.16.0).

[MaurerKrisztian]

@shreyasgombi I think I managed to solve it, but it was a while ago, I don't quite remember what exactly I tried. I hope this Dockerfile helps https://github.com/MaurerKrisztian/template-api-tm/blob/main/Dockerfile

[AriGabay]

I'm creating HTML and converting it to pdf with jspdf,jspdf-autotable

[shreyasgombi]

@shreyasgombi I think I managed to solve it, but it was a while ago, I don't quite remember what exactly I tried. I hope this Dockerfile helps https://github.com/MaurerKrisztian/template-api-tm/blob/main/Dockerfile

Any idea how to use the Docker file on Azure App Service (Web App)? I'm a newbie to Azure app service. Should I include it in my app project and build?

[MaurerKrisztian]

@shreyasgombi I think I managed to solve it, but it was a while ago, I don't quite remember what exactly I tried. I hope this Dockerfile helps https://github.com/MaurerKrisztian/template-api-tm/blob/main/Dockerfile

Any idea how to use the Docker file on Azure App Service (Web App)? I'm a newbie to Azure app service. Should I include it in my app project and build?

Idk, I don't use Azure.

[shreyasgombi]

@shreyasgombi I think I managed to solve it, but it was a while ago, I don't quite remember what exactly I tried. I hope this Dockerfile helps https://github.com/MaurerKrisztian/template-api-tm/blob/main/Dockerfile

Any idea how to use the Docker file on Azure App Service (Web App)? I'm a newbie to Azure app service. Should I include it in my app project and build?

Idk, I don't use Azure.

Ah, ok. Got it. May be @AriGabay can suggest?

[AriGabay]

The Docker file needs to be in the backend (App Service).
I think you should use jspdf,jspdf-autotable for creating a pdf file.

[shreyasgombi]

Ok,
So adding this bash -c "apt-get install libfontconfig -y && /opt/startup/init_container.sh" to the Startup Command did the job!

Thanks for the help though. 😃 ❤️

[ATXadam]

This can be resolved in Azure by going to the Web App container in portal.azure.com, and under Settings -> Configuration -> General Settings -> Startup Command change to, for example,

apt install libfontconfig -y && OPENSSL_CONF=/etc/ssl/ npm start

This will add the correct font library and fix phantomjs's SSL error that you'd get after that's resolved.