Preview Generator Error

Hi,
I want to start a preview:generate-all and I get this error after some minutes:

An unhandled exception has been thrown:
ValueError: Invalid or uninitialized Zip object in /var/www/nextcloud/lib/private/Archive/ZIP.php:155
Stack trace:
#0 /var/www/nextcloud/lib/private/Archive/ZIP.php(155): ZipArchive->getStream()
#1 /var/www/nextcloud/lib/private/Preview/Bundled.php(43): OC\Archive\ZIP->extractFile()
#2 /var/www/nextcloud/lib/private/Preview/OpenDocument.php(45): OC\Preview\Bundled->extractThumbnail()
#3 /var/www/nextcloud/lib/private/Preview/GeneratorHelper.php(63): OC\Preview\OpenDocument->getThumbnail()
#4 /var/www/nextcloud/lib/private/Preview/Generator.php(244): OC\Preview\GeneratorHelper->getThumbnail()
#5 /var/www/nextcloud/lib/private/Preview/Generator.php(140): OC\Preview\Generator->getMaxPreview()
#6 /var/www/nextcloud/lib/private/PreviewManager.php(205): OC\Preview\Generator->generatePreviews()
#7 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(203): OC\PreviewManager->generatePreviews()
#8 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(174): OCA\PreviewGenerator\Command\Generate->parseFile()
#9 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(172): OCA\PreviewGenerator\Command\Generate->parseFolder()
#10 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(172): OCA\PreviewGenerator\Command\Generate->parseFolder()
#11 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(172): OCA\PreviewGenerator\Command\Generate->parseFolder()
#12 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(172): OCA\PreviewGenerator\Command\Generate->parseFolder()
#13 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(155): OCA\PreviewGenerator\Command\Generate->parseFolder()
#14 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(123): OCA\PreviewGenerator\Command\Generate->generateUserPreviews()
#15 /var/www/nextcloud/lib/private/User/Manager.php(610): OCA\PreviewGenerator\Command\Generate->OCA\PreviewGenerator\Command\{closure}()
#16 /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php(124): OC\User\Manager->callForSeenUsers()
#17 /var/www/nextcloud/apps/bookmarks/vendor/symfony/console/Command/Command.php(255): OCA\PreviewGenerator\Command\Generate->execute()
#18 /var/www/nextcloud/apps/bookmarks/vendor/symfony/console/Application.php(1009): Symfony\Component\Console\Command\Command->run()
#19 /var/www/nextcloud/apps/bookmarks/vendor/symfony/console/Application.php(273): Symfony\Component\Console\Application->doRunCommand()
#20 /var/www/nextcloud/apps/bookmarks/vendor/symfony/console/Application.php(149): Symfony\Component\Console\Application->doRun()
#21 /var/www/nextcloud/lib/private/Console/Application.php(215): Symfony\Component\Console\Application->run()
#22 /var/www/nextcloud/console.php(100): OC\Console\Application->run()
#23 /var/www/nextcloud/occ(11): require_once('...')

Does anyone have an idea what’s wrong?

I saw this and in this way I installed it, but preview generator has some problems with ZIP

I am having the same problem.

Exception: Invalid or uninitialized Zip object
/var/www/html/lib/private/AppFramework/App.php - line 156:

OC\AppFramework\Http\Dispatcher->dispatch(OC\Core\Cont ... {}, "getPreviewByFileId")

/var/www/html/lib/private/Route/Router.php - line 301:

OC\AppFramework\App::main("OC\\Core\\C ... r", "getPreviewByFileId", OC\AppFramew ... {}, { _route: "c ... "})

/var/www/html/lib/base.php - line 1000:

OC\Route\Router->match("/core/preview")

/var/www/html/index.php - line 36:

OC::handleRequest()

Caused by ValueError: Invalid or uninitialized Zip object
/var/www/html/lib/private/Archive/ZIP.php - line 154:

ZipArchive->getStream("Thumbnails/thumbnail.png")

/var/www/html/lib/private/Preview/Bundled.php - line 42:

OC\Archive\ZIP->extractFile("Thumbnails/thumbnail.png", "/tmp/oc_tmp_muqW3n")

/var/www/html/lib/private/Preview/OpenDocument.php - line 44:

OC\Preview\Bundled->extractThumbnail(OC\Files\Node\File {}, "Thumbnails/thumbnail.png")