After a quick investigation, none of the following seem to be used anywhere in the cawiki MediaWiki namespace:
blockOptions
addTools
TwinkleGlobal

They aren't used anywhere in the cawiki User namespace either:
blockOptions
addTools
TwinkleGlobal

They are used on meta in users' global.js, though:
blockOptions
addTools
TwinkleGlobal

Why do some of the test urls go to mediawikiwiki if this task is about cawiki? For example the first one with blockOptions. If I enter

mw.loader.load( 'https://meta.wikimedia.org/w/index.php?title=User:Mike.lifeguard/blockOptions.js&action=raw&ctype=text/javascript' );

in the console on https://www.mediawiki.org/wiki/Topic:Vlxq3or3tf4p1ozv I get "Uncaught ReferenceError: wgCanonicalSpecialPageName is not defined", just as the task says, but that is because mediawikiwiki has turned off global JavaScript variables (T72470). That does not happen on cawiki.

It started of as cawiki but I expanded it to include mediawiki.org as I found them. I've updated the title to reflect the status quo.

Yep am aware of T72470 being the cause. The script should still be fixed as it's going to break in more places as T72470 rolls out further.

@Vriullop, are you interested in scripts, or can you tell me who at the Catalan Wikipedia might be interested in fixing some of these scripts?

In T259385#6398117, @Whatamidoing-WMF wrote:

@Vriullop, are you interested in scripts, or can you tell me who at the Catalan Wikipedia might be interested in fixing some of these scripts?

There are currently no script maintainers in ca.wiki. I will make a call in case any dormant user can help.

@Vriullop I could do with your help letting user Georg-hessen know that their monobook script is broken : https://ca.wikipedia.org/wiki/Usuari:Georg-hessen/monobook.js Could you help with that?

@IKhitron The CiteTooltip gadget on Hebrew Wikipedia is one of the main sources of errors in our JavaScript - about 60% of the errors we are seeing in Hebrew Wikipedia since we enabled logging today. Would it be possible for you to ping the maintainer and request they look into the bug?

In T259385#6414034, @Jdlrobson wrote:

@Vriullop I could do with your help letting user Georg-hessen know that their monobook script is broken : https://ca.wikipedia.org/wiki/Usuari:Georg-hessen/monobook.js Could you help with that?

The tool called Viquiestris is known as deprecated with no maintenance for a long time. I have commented it out and explained the reason to the user.

I don't know why MediaWiki:Wikiminiatlas.js is on that list. The JS Error column shows "Unknown" and I cannot replicate any error on the linked page.

@dschwen unfortunately, since this script is on meta wikimedia and loaded by other wikis eg. Catalan, Hebrew, for security reasons the stack trace is hidden and it displays as "Script error".

Given the low volume (about 46 every hour) it's likely hidden somewhere in the interface.
I'm working hard to get the stack trace for that error. Any help trying to identify it from users of the script would be helpful.

Adding the following to user scripts would make a user visible alert to when the error occurs if anyone is interested playing detective:

 mw.trackSubscribe( 'resourceloader.exception', function ( topic, data ) {
alert(topic + JSON.stringify(data)); 
                } );
                // setup the global error handler
                mw.trackSubscribe( 'global.error', function ( topic, error ) {
alert(error);
                } );

@IKhitron I've fixed the citetooltip issue, but I've found another issue with a user script - this one with https://he.wikipedia.org/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Ori/monobook.js which throws Uncaught ReferenceError: AddTemplateToList is not defined. Would it be possible for you to reach out to User:Ori to get that fixed?

In T259385#6417187, @Jdlrobson wrote:

@IKhitron I've fixed the citetooltip issue, but I've found another issue with a user script - this one with https://he.wikipedia.org/wiki/%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Ori/monobook.js which throws Uncaught ReferenceError: AddTemplateToList is not defined. Would it be possible for you to reach out to User:Ori to get that fixed?

Your try can be good as mine. He's not so available as years ago, so User talk page is the best option. And also, do you know how to fix it? If you don't, maybe a better way for you is pinging here 'eranroz'.

@IKhitron thanks for getting back to me on Ori's code. I've gone ahead and patched it myself given his unavailability.

However, I found a new error today in https://he.wikipedia.org/w/index.php?title=%D7%9E%D7%A9%D7%AA%D7%9E%D7%A9:Bharel/%D7%A1%D7%A7%D7%A8%D7%99%D7%A4%D7%98%D7%99%D7%9D/64-new-min.js&action=raw&ctype=text/javascript

The error is Uncaught TypeError: Cannot set property 'onclick' of null.
It also threw an error uncaught exception: [object Object] on https://he.wikipedia.org/w/index.php?title=%D7%9E%D7%A9%D7%A7%D7%A4%D7%99%D7%99%D7%9D&curid=30970&diff=29090426&oldid=29089910

Unfortunately, the code seems to be minified, so I can't see what's wrong here. I'd appreciate if you reached out to its maintainer to get these issues looked into.

@Bharel?

I'm also seeing (and fixing) a large amount of problematic scripts on Hebrew Wikipedia which use mw.util.addPortletLink must neglect to deal with the case where the link is not added and returning null. https://he.wikipedia.org/w/index.php?title=%D7%9E%D7%93%D7%99%D7%94_%D7%95%D7%99%D7%A7%D7%99%3A%D7%A1%D7%A7%D7%A8%D7%99%D7%A4%D7%98%D7%99%D7%9D%2F41.js&type=revision&diff=29165290&oldid=17655871

Me fixing these might not scale so I wonder if we can identify such scripts (via an appropriate search query) and run a user notice/send talk page messages for those. Does anyone have any experience with doing such things?

Well, I think you can find them using regular wikisearch. And yes, I did fix it once on MediaWiki-extensions-GlobalWatchlist.

In T259385#6439092, @IKhitron wrote:

@Bharel?

The non minified version can be accessed by removing the "min" at the end. I'll take a look at it when I have the chance.

@Bharel you'll need to replace

mw.util.addPortletLink('p-tb', '#', 'הגדרות סקריפט 64').onclick =
       this.SettingsDialog.openDialog.bind(this.SettingsDialog);

with
var link = mw.util.addPortletLink('p-tb', '#', 'הגדרות סקריפט 64');
if ( link ) {

link.onclick =
      this.SettingsDialog.openDialog.bind(this.SettingsDialog);

}

as sometimes addPortletLink returns null.