Which Joomla version and which PHP version are you using?

Sorry, running Joomla 5.2
PHP 8.4

I have spent near 8 hours trying to solve this issue.
Going to look for another template provider I think.

I just downloaded Emani today and I was getting the same message in the Notifications section of the Home Dashboard. But I'm still able to access the other areas of the dashboard, just not the Joomla update area, which is when I'm getting this error message. I'm going to continue on, but can someone provide an answer or link to another forum thread that answers this question?

Your first priority should be to update your Joomla version! For Joomla 5, that's version 5.4.3. Have you tried a manual update?
https://github.com/joomla/joomla-cms/releases/download/5.4.3/Joomla_5.4.3-Stable-Update_Package.zip


Don't forget to backup your data beforehand!

I've never done a manual update. I just installed the Emani template, thinking it would have the updated Joomla version. Generally I just hit "Update" in the dashboard and it offers the update to me. This is where I currently am getting the error message though. Thank you for the response. I'll look into what I can do manually, but any further instruction would be appreciated.

EDIT: I just tried the manual update via System > Install Extensions as directed by Joomla documentation. I was given the error message that the Joomla package cannot be installed through the Extension Manager. Additionally it said: "JInstaller: :Install: Can't find XML setup file"

To be clear, my notifications panel is telling me Joomla is up to date even though it's 5.2.5. The other error messages I'm seeing are completely new to me (see attached screenshot in my dashboard). But still, when I try to go through the dashboard System > Updates > Joomla, I again get the error 0 message making me think future updates will be an issue.

I have the same problem.

solved

with help of ChatGPT

SOLUTION:

### Joomla Update Issue – "Could not load root metadata"

**Problem**

The Joomla update component failed with the following error:

> Could not load root metadata

The root cause was a combination of:

* Empty or corrupted `_tuf_metadata` records.
* Duplicate Joomla TUF update sites (`update_site_id` 1 and 23).
* A mismatch between the records stored in `_tuf_metadata` and the entries in `_update_sites`.

As a result, Joomla was unable to locate and validate the required TUF (The Update Framework) root metadata used by the Joomla Update component.

### Investigation

The following issues were identified:

1. The `_tuf_metadata` table was either empty or contained invalid references.
2. The `_update_sites` table contained two Joomla TUF update site entries:

* `update_site_id = 1`
* `update_site_id = 23` (Joomla! Core)
3. The records in `_tuf_metadata` referenced update site IDs that did not correspond to the active Joomla Core update site.
4. Because of this inconsistency, Joomla could not load the root metadata and the update component failed.

### Resolution

The issue was resolved by:

1. Restoring valid records into the `_tuf_metadata` table.
2. Identifying and removing the duplicate Joomla TUF update site entry.
3. Ensuring that all records in `_tuf_metadata` referenced the correct Joomla Core update site (`update_site_id = 23`).
4. Updating the relationships in `_update_sites_extensions` to ensure that the Joomla Core extension (`files_joomla`) was linked to the correct update site.
5. Clearing the Joomla update cache and rebuilding the update configuration.
6. Verifying that the Joomla Update component could successfully load and validate the TUF root metadata.

### Result

After synchronizing the `_tuf_metadata`, `_update_sites`, and `_update_sites_extensions` tables, the Joomla Update component started working correctly and updates could be performed normally.