Spatie\Backup\Exceptions\InvalidBackupJob::noDestinationsSpecified PHP Method

    public static function noDestinationsSpecified() : InvalidBackupJob
    {
        return new static('A backup job cannot run without a destination to backup to!');
    }

 public function run()
 {
     $this->temporaryDirectory = TemporaryDirectory::create();
     try {
         if (!count($this->backupDestinations)) {
             throw InvalidBackupJob::noDestinationsSpecified();
         }
         $manifest = $this->createBackupManifest();
         if (!$manifest->count()) {
             throw InvalidBackupJob::noFilesToBeBackedUp();
         }
         $zipFile = $this->createZipContainingEveryFileInManifest($manifest);
         $this->copyToBackupDestinations($zipFile);
     } catch (Exception $exception) {
         consoleOutput()->error("Backup failed because {$exception->getMessage()}." . PHP_EOL . $exception->getTraceAsString());
         event(new BackupHasFailed($exception));
     }
     $this->temporaryDirectory->delete();
 }