OnlyOffice Community Document Server External Storage error

hi everyone,

I have this error, what I can do?

Thanks.

OCA\DocumentServer\Document\DocumentConversionException: namespace error : Namespace prefix a on prstTxWarp is not defined <a:prstTxWarp prst=“textPlain”><a:avLst/></a:prstTxWarp> ^ namespace error : Namespace prefix a on avLst is not defined <a:prstTxWarp prst=“textPlain”><a:avLst/></a:prstTxWarp> ^ namespace error : Namespace prefix a on prstGeom is not defined <a:prstGeom prst=“rect”><a:avLst/></a:prstGeom> ^ namespace error : Namespace prefix a on avLst is not defined <a:prstGeom prst=“rect”><a:avLst/></a:prstGeom> ^ namespace error : Namespace prefix a on srgbClr is not defined al=“2”/><w:szCs w:val=“2”/>w14:textFillw14:solidFill<a:srgbClr val=“C0C0C0” ^ namespace error : Namespace prefix a on srgbClr is not defined al=“2”/><w:szCs w:val=“2”/>w14:textFillw14:solidFill<a:srgbClr val=“C0C0C0” ^

/var/www/html/nextcloud/apps/documentserver_community/lib/DocumentConverter.php - line 123:

OCA\DocumentServer\Document\ConverterBinary->run()

/var/www/html/nextcloud/apps/documentserver_community/lib/DocumentConverter.php - line 111:

OCA\DocumentServer\DocumentConverter->runCommand()

/var/www/html/nextcloud/apps/documentserver_community/lib/DocumentConverter.php - line 47:

OCA\DocumentServer\DocumentConverter->convertFiles()

/var/www/html/nextcloud/apps/documentserver_community/lib/Document/DocumentStore.php - line 96:

OCA\DocumentServer\DocumentConverter->getEditorBinary()

/var/www/html/nextcloud/apps/documentserver_community/lib/LocalAppData.php - line 100:

OCA\DocumentServer\Document\DocumentStore->OCA\DocumentServer\Document\{closure}("*** sensiti ... *")

/var/www/html/nextcloud/apps/documentserver_community/lib/Document/DocumentStore.php - line 97:

OCA\DocumentServer\LocalAppData->getReadWriteLocalPath()

/var/www/html/nextcloud/apps/documentserver_community/lib/XHRCommand/OpenDocument.php - line 104:

OCA\DocumentServer\Document\DocumentStore->getDocumentForEditor()

/var/www/html/nextcloud/apps/documentserver_community/lib/XHRCommand/AuthCommand.php - line 133:

OCA\DocumentServer\XHRCommand\OpenDocument->openDocument()

/var/www/html/nextcloud/apps/documentserver_community/lib/XHRCommand/CommandDispatcher.php - line 45:

OCA\DocumentServer\XHRCommand\AuthCommand->handle()

/var/www/html/nextcloud/apps/documentserver_community/lib/Channel/Channel.php - line 106:

OCA\DocumentServer\XHRCommand\CommandDispatcher->handle()

/var/www/html/nextcloud/apps/documentserver_community/lib/Controller/SessionController.php - line 114:

OCA\DocumentServer\Channel\Channel->handleCommand()

/var/www/html/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 169:

OCA\DocumentServer\Controller\SessionController->xhrSend()

/var/www/html/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 100:

OC\AppFramework\Http\Dispatcher->executeController()

/var/www/html/nextcloud/lib/private/AppFramework/App.php - line 152:

OC\AppFramework\Http\Dispatcher->dispatch()

/var/www/html/nextcloud/lib/private/Route/Router.php - line 309:

OC\AppFramework\App::main()

/var/www/html/nextcloud/lib/base.php - line 1008:

OC\Route\Router->match()

/var/www/html/nextcloud/index.php - line 37:

OC::handleRequest()