Hello, I have a problem with installing add-ons downloaded here

[Gniewny]

InvalidArgumentException: Invalid XML in file. in src/XF/Util/Xml.php at line 51

2. XF\Util\Xml:pen() in src/XF/Util/Xml.php at line 22
4. XF\Util\Xml:penFile() in src/XF/AddOn/DataType/AbstractDataType.php at line 60
6. XF\AddOn\DataType\AbstractDataType->openTypeFile() in src/XF/Job/AddOnData.php at line 60
8. XF\Job\AddOnData->run() in src/XF/Job/Manager.php at line 260
10. XF\Job\Manager->runJobInternal() in src/XF/Job/Manager.php at line 202
12. XF\Job\Manager->runJobEntry() in src/XF/Job/Manager.php at line 118
14. XF\Job\Manager->runByIds() in src/XF/Admin/Controller/Tools.php at line 122
16. XF\Admin\Controller\Tools->actionRunJob() in src/XF/Mvc/Dispatcher.php at line 352
18. XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 259
20. XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 115
22. XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 57
24. XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2487
26. XF\App->run() in src/XF.php at line 524
28. XF::runApp() in admin.php at line 13

 

[shanruto]

Which addon did you try to install?