Failed to read package.xml

[FEA-eng]

I have Fasteners installed and updated and each time I open the Preferences (without even going to this workbench first), I see this:

Failed to read C:\Users\username\AppData\Roaming\FreeCAD\Mod\fasteners.backup1702501118.9117603\package.xml

Even worse, it prevents me from copying the About FreeCAD info to the clipboard:

19:48:57  Unhandled Base::Exception caught in GUIApplication::notify.
The error message is: Fatal error at file "C:\Users\username\AppData\Roaming\FreeCAD\Mod\fasteners.backup1702501118.9117603\package.xml", line 5, column 2
   Message: element name expected

Can this be solved on your side? The workbench itself seems to be working fine for me.

OS: Windows 10 build 19041
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37543 (Git)
Build type: Release
Branch: main
Hash: 3eb45b045cdda9d5bfe11baba2567a1df90f064c
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: Polish/Poland (pl_PL)

[shaise]

try refreshing the cache of the addon manager

[FEA-eng]

try refreshing the cache of the addon manager

Thanks. The issue is gone, at least for now. On one computer I just uninstalled Fasteners, deleted those files and reinstalled and it's working. On other computers, I don't see this error anymore. But if it comes back in the next weekly builds for some reason then I'll follow your advice.