An unhandled exception has been thrown

[mellow2012]

Hi

we had this problem sometimes:
there are vwx (Vectorworks) and dwg (Autocad) files in the folder

Error:
An unhandled exception has been thrown: ValueError: Path cannot be empty in /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/richdocuments/lib/Preview/Office.php:65 Stack trace: #0 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/richdocuments/lib/Preview/Office.php(65): fopen() #1 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/Preview/GeneratorHelper.php(64): OCA\Richdocuments\Preview\Office->getThumbnail() #2 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/Preview/Generator.php(361): OC\Preview\GeneratorHelper->getThumbnail() #3 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/Preview/Generator.php(337): OC\Preview\Generator->generateProviderPreview() #4 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/Preview/Generator.php(143): OC\Preview\Generator->getMaxPreview() #5 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/PreviewManager.php(211): OC\Preview\Generator->generatePreviews() #6 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(232): OC\PreviewManager->generatePreviews() #7 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(214): OCA\PreviewGenerator\Command\Generate->parseFile() #8 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #9 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #10 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #11 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(212): OCA\PreviewGenerator\Command\Generate->parseFolder() #12 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(183): OCA\PreviewGenerator\Command\Generate->parseFolder() #13 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/apps/previewgenerator/lib/Command/Generate.php(131): OCA\PreviewGenerator\Command\Generate->generatePathPreviews() #14 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/3rdparty/symfony/console/Command/Command.php(298): OCA\PreviewGenerator\Command\Generate->execute() #15 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/3rdparty/symfony/console/Application.php(1040): Symfony\Component\Console\Command\Command->run() #16 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/3rdparty/symfony/console/Application.php(301): Symfony\Component\Console\Application->doRunCommand() #17 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/3rdparty/symfony/console/Application.php(171): Symfony\Component\Console\Application->doRun() #18 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/lib/private/Console/Application.php(213): Symfony\Component\Console\Application->run() #19 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/console.php(102): OC\Console\Application->run() #20 /var/www/vhosts/lautwerfer.cloud/httpdocs/nextcloud/occ(11): require_once('...')

[mellow2012]

I have found the reason why this error occurs
If the file is no longer in SMB storage but is still present in oc_filecache, then this problem occurs