Summary
Resource group won’t open
When I launch the MODX manager, on the Resources panel all of the resource “folders” show, each with a dropdown arrow next to them to open and view the child pages within that group. But suddenly today, one of the dropdown arrows disappeared.
When the manager is first opened and you click on the resources panel, the dropdown arrow in question shows for a brief second then disappears. I looked at the underlying code with Friefox’s developer tools and the other folders that are working properly show a <i class="x-tree-ec-icon x-tree-elbow-plus">::before</i>
whereas the one now missing the dropdown arrow shows only <i class="x-tree-ec-icon x-tree-elbow-plus"></i>
The resources are still there, as I can see them in the database and if you load pages via ID they load fine. Also in the database, the parent value for each resource points to the correct folder.
I have tried using the right click on the main Website folder Refresh Context, which causes the dropdown arrow to reappear, but if I click on it, the spinner shows for a few seconds then both the spinner and arrow disappear. If I use the right click on the folder itself for Refresh, I get the same result, the arrow reappears, but clicking on it results in a few seconds of spinner then both gone.
I have also tried reinstalling MODX, but no change.
The only error messages in recent times are below. But none align with when the issue started.
[2020-05-22 07:10:09] (ERROR @ /path-to-my-core/model/modx/modcachemanager.class.php : 349) Error caching lexicon topic lexicon/en/core/resource
[2020-05-24 07:38:16] (ERROR @ /path-to-my-core/model/modx/modcachemanager.class.php : 349) Error caching lexicon topic lexicon/en/core/resource
[2020-05-27 01:22:27] (ERROR @ /path-to-my-core/model/modx/modcachemanager.class.php : 349) Error caching lexicon topic lexicon/en/core/namespace
I can manually change the parent value in the database and the resource appears under the new parent. This would be if all else fails solution, but involves a lot of resources.
No new Extras have been added and the only recent activities have been entering copy into other resources.
Environment
Running MODX 2.7.3 on Apache
Totally different install than was involved with my previous questions.