In bug 1695247 we started collecting data on errors in network loads.

The top DTD error loads in Beta are:

• omni.ja!/chrome/toolkit/content/global/DTD/xhtml1-strict.dtd (Beta: volume: 3,776/day, clients: 3,214/day)
• omni.ja!/chrome/devtools/content/memory/DTD/xhtml1-strict.dtd(Beta: volume: 1,482/day, clients: 1,424/day)

Scanning our source we can see a number of relative paths in XHTML documents: https://searchfox.org/mozilla-central/search?q=%22DTD%2Fxhtml1-strict.dtd&case=true&path=

In particular the devtools/client/memory/index.xhtml seems like it could lead to the second of the loads (/memory/ in the path).

We should turn them into absolute URLs and maybe also be more vocal about broken DTD loads in browser console.

Zibi, thanks for filing this. Any recommendation for next triage owner? Should this go to Necko?

Distributed, unless we find someone who can do a sweep:

• browser/ - Firefox front-end team?
• devtools/ - Devtools team - https://wiki.mozilla.org/Modules/All#DevTools
• toolkit/ - Mossop, Gijs

Since according to the description toolkit is hit the most often, lets get it over there and see how they want to address this (create a new bug on their end, ...).

It looks like this is mostly a search&replace that needs to be done. This could probably be a mentored bug, Mark would you like to mentor it?

I'm happy to mentor this.

If you need help getting started, please see this document.

The work here is to replace references to "DTD/xhtml1-strict.dtd" with "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"

These are the files affected:

https://searchfox.org/mozilla-central/search?q=%22DTD%2Fxhtml1-strict.dtd&case=true&path=

(In reply to Mark Banner (:standard8) from comment #5)

I'm happy to mentor this.

If you need help getting started, please see this document.

The work here is to replace references to "DTD/xhtml1-strict.dtd" with "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"

These are the files affected:

https://searchfox.org/mozilla-central/search?q=%22DTD%2Fxhtml1-strict.dtd&case=true&path=

Hey I am new to Open Source and currently learning Web Development. Can I work on this issue?
I've gone through the document provided by @Mark Banner. Looks like the cloning part will take time. If this issue is for the new comers I would like to peek into it.

What I understood from the bug is: I have to replace the "DTD/xhtml1-strict.dtd" with http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd in the files.

(In reply to divyanshusoni52 from comment #6)

Hey I am new to Open Source and currently learning Web Development. Can I work on this issue?
I've gone through the document provided by @Mark Banner. Looks like the cloning part will take time. If this issue is for the new comers I would like to peek into it.

Sure please start working on it. When you attach a patch, it'll automatically be assigned.

The cloning is likely to be the longest part, but once you've cloned once you shouldn't need to do that again for other bugs.

What I understood from the bug is: I have to replace the "DTD/xhtml1-strict.dtd" with http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd in the files.

Almost correct, replace "DTD/xhtml1-strict.dtd" with "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" - the quotes were missing in the second case.

Hi, Can i pick this bug?

Hi achmurali, let's just check with divyanshusoni52 to see if they are still working on it.

(In reply to Mark Banner (:standard8) from comment #9)

Hi achmurali, let's just check with divyanshusoni52 to see if they are still working on it.

Sorry for the late reply. I tried to clone the repo but I think I won't be able to continue with this issue. I am having some serious issues with my system. It can't handle such large files as of now. I'll get back to the org and contribute as soon as I update my machine. Thank you.

https://hg.mozilla.org/mozilla-central/rev/52b26c06e1f6

(In reply to Web Platform Test Sync Bot (Matrix: #interop:mozilla.org) from comment #15)

Upstream PR was closed without merging

As I am new here, I don't understand, what happened can someone explain me.

(In reply to rai.ankur0007 from comment #16)

(In reply to Web Platform Test Sync Bot (Matrix: #interop:mozilla.org) from comment #15)

Upstream PR was closed without merging

As I am new here, I don't understand, what happened can someone explain me.

It is in reference to the PR mentioned in comment 12 - we have automated tools to upstream changes to the web platform tests. In this case the PR had an issue with tests failing, so the closed it and then re-opened it. The warning here was just in case we would need to reconsider the changes made, so we can ignore it. Hopefully there should be a follow-up at some stage where it does get merged.