Pdf.js: MessageHandler Undefined

[babyedwin]

Hi, I am unable to get my PDF displayed , It always stops at below warning and does not call call back functions for getPage. Not sure what am i missing here

[12:04:48.929] Warning: Unhandled rejection: TypeError: PDFJS.WorkerMessageHandler is undefined
WorkerTransport_setupFakeWorker@http://192.168.2.3:10080/CSEMobile/apps/services/preview/CSEMobileHybrid/common/1.0/default/resources/scripts/pdf/src/pdf.js:4358
pdfjsWrapper/WorkerTransport/<@http://192.168.2.3:10080/CSEMobile/apps/services/preview/CSEMobileHybrid/common/1.0/default/resources/scripts/pdf/src/pdf.js:4314
bind/<@http://192.168.2.3:10080/CSEMobile/apps/services/preview/CSEMobileHybrid/common/1.0/default/common/js/base.js:762
runHandlers@http://192.168.2.3:10080/CSEMobile/apps/services/preview/CSEMobileHybrid/common/1.0/default/resources/scripts/pdf/src/pdf.js:797
bind/<@http://192.168.2.3:10080/CSEMobile/apps/services/preview/CSEMobileHybrid/common/1.0/default/common/js/base.js:762

[Snuffleupagus]

It's difficult to tell from this description, but I assume that you are trying to integrate PDF.js in your own project.
If that is the case, please see: https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#wiki-custom, especially this part:

please prepare short well-documented example that demonstrate the problem and make it accessible online on your website, jsbin, etc.

Also, please provide more information regarding your configuration, such as: Operating System, Browser and other details that might be relevant to the issue.

[negativalpha]

Having the same issue (PDFJS.version = '0.8.613'; PDFJS.build = '54acf20';) running on Mac. Tried Safari, Chrome and Firefox. Error raises in everyone of them, if PDFJS.disableWorker = true. If disableWorker undefined or false, no output at all is given.

[timvandermeij]

@negativalpha Is this still an issue? If so, please provide a link to the broken PDF file or provide more information on your custom implementation.

[timvandermeij]

No response, closing as incomplete.

[maiorano84]

Reopening this, as I believe I'm running into a similar issue:

-- Live example --

[removed]

---

-- Console --

Warning: Setting up fake worker.
pdf.js?ver=3.8.16:8130 Uncaught TypeError: Cannot read property 'WorkerMessageHandler' of undefined
at pdf.js?ver=3.8.16:8130
at HTMLScriptElement.Util_loadScript.script.onload (pdf.js?ver=3.8.16:812)

---

-- Environment --

Server: MediaTemple DV - CentOS
OS: Mac OS X El Capitan
Browser: Chrome 55.0.2883.95 (64-bit)

---

-- Implementation --

jQuery(document).ready(function($){
    $(".portfolio_preview_container").on('DOMNodeInserted', function () {
        $("[data-canvas-pdf]").each(function(){
            var pdf = new CanvasPDF($(this).attr("data-canvas-pdf"));
        });
    });
});

var CanvasPDF = function(url){
    var pdfDoc = null,
        pageNum = 1,
        pageRendering = false,
        pageNumPending = null,
        scale = 0.8,
        canvas = document.getElementById('the-canvas'),
        ctx = canvas.getContext('2d');

    //.... Remainder is copied verbatim from /examples/learning/prevnext.html
};

---

-- Explanation --

The contents of each portfolio item is loaded through AJAX. I'm listening for a DOMNodeInserted event to trigger off the search for any elements containing the [data-canvas-pdf] attribute - the value of which is the URL path to the target PDF.

I hope this is enough information to go off of. I've been wrestling with this for about a good 5 hours, and I could use a fresh pair of eyes on it.

[rkpasia]

@maiorano84 did you set a worker?
Had the same issue right now and I solved with this
PDFJS.workerSrc = '//mozilla.github.io/pdf.js/build/pdf.worker.js';

There is a short explanation in the examples page

[maiorano84]

@rkpasia I hadn't seen those examples before. I'll take a look into that to see if that was my problem. +1 for the suggestion.

[crapthings]

import pdfjs from 'pdfjs-dist'
pdfjs.disableWorker = true
pdfjs.workerSrc = ''

doesn't work

[lreindl]

I'm also getting this same error. I believe @rkpasia is correct but I'm not sure what do do in my situation. What are you supposed to set "PDFJS.workerSrc" to when all my JS files are concatenated into one?

[rkpasia]

Maybe try to set the worker in another way, try to find the root object and set it manually.

[mudivili]

I also had similar problem.

pdfjsLib.GlobalWorkerOptions.workerSrc = '//mozilla.github.io/pdf.js/build/pdf.worker.js';

worked for me.

[timvandermeij]

You should host the pdf.worker.js file yourself though instead of getting it from our website since that's a development build that constantly changes, so it's not recommended for stability.

[mudivili]

Oh, I see. Okay, I will host the worker file in my server only. Thanks for
the suggestion.

On Sun, 25 Nov 2018 at 12:20 AM, Tim van der Meij [e-mail]
wrote:

You should host the pdf.worker.js file yourself though instead of getting
it from our website since that's a development build that constantly
changes, so it's not recommended for stability.

—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
https://github.com/mozilla/pdf.js/issues/3754#issuecomment-441388015,
or mute the thread
https://github.com/notifications/unsubscribe-auth/AYZQ6VhtS8gPZXReK1p9DnzKNXrcc7aGks5uyZUBgaJpZM4BDk20
.

>

Thank you!

With Regards,
Tamil Vendhan Kanagarasu