error when trying to download sermons - 0 - Call to undefined method Joomla\File

A visitor attended me with this error, debug gives:Call to undefined method Joomla\Filesystem\File::getExt()
/home/xxx/domains/kaleo.nl/public_html/components/com_sermonspeaker/controller.php:195Call stack#FunctionLocation1()JROOT/components/com_sermonspeaker/controller.php:1952SermonspeakerController->download()JROOT/libraries/src/MVC/Controller/BaseController.php:6933Joomla\CMS\MVC\Controller\BaseController->execute()JROOT/components/com_sermonspeaker/sermonspeaker.php:394require_once()JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:715Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}()JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:736Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch()JROOT/libraries/src/Component/ComponentHelper.php:3617Joomla\CMS\Component\ComponentHelper::renderComponent()JROOT/libraries/src/Application/SiteApplication.php:2088Joomla\CMS\Application\SiteApplication->dispatch()JROOT/libraries/src/Application/SiteApplication.php:2499Joomla\CMS\Application\SiteApplication->doExecute()JROOT/libraries/src/Application/CMSApplication.php:29310Joomla\CMS\Application\CMSApplication->execute()JROOT/includes/app.php:6111require_once()JROOT/index.php:32

Which version of Joomla and SermonSpeaker are you using?
SermonSpeaker 6.1.3 should have fixed this.

I have 6.1.2, but cannot see the version - the info with the component download on this site says 6.1.0.
The update function within Joomla gives no 6.1.3 and after check for updates, I get this message:

Update: Could not open update site #860 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_sermonspeaker.xml
Update: Could not open update site #862 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_sermonarchive.xml
Update: Could not open update site #866 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_related_sermons.xml
Update: Could not open update site #867 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_sermoncast.xml
Update: Could not open update site #875 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_latestsermons.xml
Update: Could not open update site #876 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/mod_sermonupload.xml
Update: Could not open update site #878 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_sermonspeaker_finder.xml
Update: Could not open update site #880 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_sermonspeaker_search.xml
Update: Could not open update site #881 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_sermonspeaker_mediaelement.xml
Update: Could not open update site #882 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_sermonspeaker_jwplayer7.xml
Update: Could not open update site #884 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_content_sermonspeaker.xml
Update: Could not open update site #890 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/plg_editors_xtd_sermonspeaker.xml
Update: Could not open update site #906 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/com_sermonspeaker.xml
Update: Could not open update site #923 "SermonSpeaker.net", URL: www.sermonspeaker.net/update/package.xml
Update: Could not open update site #925 "T3 Framework Update", URL: www.t3-framework.org/update.xmlAn error has occurred.

0 Attempt to assign property "name" on null

Call stack#FunctionLocation1()JROOT/libraries/src/Updater/Adapter/ExtensionAdapter.php:702Joomla\CMS\Updater\Adapter\ExtensionAdapter->_startElement() 3xml_parse()JROOT/libraries/src/Updater/Adapter/ExtensionAdapter.php:2844Joomla\CMS\Updater\Adapter\ExtensionAdapter->findUpdate()JROOT/libraries/src/Updater/Updater.php:2645Joomla\CMS\Updater\Updater->getUpdateObjectsForSite()JROOT/libraries/src/Updater/Updater.php:1656Joomla\CMS\Updater\Updater->findUpdates()JROOT/administrator/components/com_installer/src/Model/UpdateModel.php:2767Joomla\Component\Installer\Administrator\Model\UpdateModel->findUpdates()JROOT/administrator/components/com_installer/src/Controller/UpdateController.php:1138Joomla\Component\Installer\Administrator\Controller\UpdateController->find()JROOT/libraries/src/MVC/Controller/BaseController.php:6939Joomla\CMS\MVC\Controller\BaseController->execute()JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:14310Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch()JROOT/libraries/src/Component/ComponentHelper.php:36111Joomla\CMS\Component\ComponentHelper::renderComponent()JROOT/libraries/src/Application/AdministratorApplication.php:14312Joomla\CMS\Application\AdministratorApplication->dispatch()JROOT/libraries/src/Application/AdministratorApplication.php:18613Joomla\CMS\Application\AdministratorApplication->doExecute()JROOT/libraries/src/Application/CMSApplication.php:29314Joomla\CMS\Application\CMSApplication->execute()JROOT/administrator/includes/app.php:6115require_once()JROOT/administrator/index.php:32

Which version of Joomla? In Joomla 4.4.x you should see the update to 6.1.3.

I've updated the download links on this site now so you can download the zip files. You can also always grab them from GitHub (that's where they actually are):
github.com/Bakual/SermonSpeaker/releases

The update errors are unrelated to SermonSpeaker as it also affected the T3 Framework. Apparently you're server had some connection issues.

Downloading works again. Thanks for your help.