Doesn't work in MODX3

[SnowCreative]

Installing dashboard widget works, but on the actual dashboard instead of the widget is a block of text showing the error followed by a block of stack trace info.

Launching the dedicated resource in the tree that uses the snippet UpgradeMODXWidget also generates the same error.

This error gets generated:

Fatal error: Uncaught Error: Undefined class constant 'MAJOR_VERSION' in /home/rainbowt/modx3/core/vendor/guzzlehttp/guzzle/src/Utils.php:118

[Mark-H]

That's an interesting error as it's actually failing in the core. Perhaps UpgradeMODX ships with guzzle and something's getting mixed up?

[BobRay]

Yes, guzzle is included. I wonder if changing the use lines in the upgrademodx.class.php class file and the three use lines in the download.files.php processor class to reference the MODX3 guzzle library would work:

use GuzzleHttp\Exception\RequestException;

@Mark-H Do older versions of MODX allow autoloading guzzle?

[BobRay]

@Rainbowtiger I haven't been able to duplicate this. I see the normal stuff and the program runs to completion. Setup works, but The Manager Menu is missing. Can MODX3-alpha1 be installed by copying the files and running setup? What about MODX3-alpha3? If not, there's no way to test UGM.

[SnowCreative]

Well, that's what I did (copy files and run setup). I upgraded from a previous version. Maybe that's what messed up my site, because there are a bunch of things not working that really should be.

[SnowCreative]

I just did a clean install of Alpha 3, and after installing UpgradModx, I get the same error message as before.

[BobRay]

Did you install Alpha 3 by downloading and unzipping the files, then running setup?

[SnowCreative]

Yes, exactly.
https://modx.com/download/nightlies

[BobRay]

Did the error occur during UGM or after?

[SnowCreative]

Right after installing, the dashboard widget displays the error, and viewing the resource with the UGM snippet displays the error.

[BobRay]

Try this: go to System Settings, type "feed" in the search box and disable the two feeds (security and news). Clear the cache and see if you still get the error. The feeds probably use Guzzle, and that may be causing the conflict (and could explain why I don't get it, since I have them turned off).

[SnowCreative]

Tried that, and it didn't work. Tried turning off everything but UGM in the dashboard, and still getting the errors. Also, that wouldn't explain why the dedicated resource, which doesn't use the dashboard, doesn't work either.

Weird that I would get the error and not you if we are both using a clean install of the same version. I'm happy to give you access to my installation, if that would help.

[BobRay]

Also very weird that the constant is undefined, rather than an attempt to redefine.

[BobRay]

I think I can see why you're getting it and I'm not. We have different versions of Alpha 3. In the version I'm using, the Utils.php file is only 68 lines long and doesn't contain that constant. In the latest nightly, it's 388 lines long.

My guess is that MODX recently updated to Guzzle 7, while UGM is using Guzzle 6, although I can't find a commit where that happened. GitHub no longer has a facility to search commits by keyword.

The error you're seeing has been reported in other platforms (e.g., WordPress).

MODX 3 setup apparently requires PHP 7.2.5 so I won't be able to test until I upgrade PHP.

[SnowCreative]

Yes, I have the latest alpha installed. As I said, if you want access to my installation, just let me know.

[SnowCreative]

Yes, it's Guzzle 7.2.0.