prevent removing the tmp folder if export is empty

Author: thomas-kl1

Model/ExportEntityRepository.php

@@ -160,7 +160,9 @@ public function getList(SearchCriteriaInterface $searchCriteria): SearchResultsI
     public function delete(ExportEntityInterface $exportEntity): bool
     {
         try {
-            $this->fileSystem->getDirectoryWrite(DirectoryList::TMP)->delete($exportEntity->getFilePath());
+            if ($exportEntity->getFilePath()) {
+                $this->fileSystem->getDirectoryWrite(DirectoryList::TMP)->delete($exportEntity->getFilePath());
+            }
             $this->remove($exportEntity);
             $this->exportEntityResource->delete($exportEntity);
         } catch (Exception $e) {