Problém s modulom Backup and Migrate

Ahojte,
po predchádzajúcej zlej skúsenosti som si na web nainštaloval tento modul. Záloha databázy prebehne OK, ale keď chcem zálohovať samotný web, alebo všetko spolu, tak mi vypíše túto hlášku. Neviete prosím čo s tým ďalej?
Ďakujem pekne
Jano

The website encountered an unexpected error. Please try again later.
Error: Call to a member function create() on null in BackupMigrate\Core\Source\MySQLiSource->exportToFile() (line 48 of modules/backup_migrate/vendor/backupmigrate/core/src/Source/MySQLiSource.php).
BackupMigrate\Core\Source\MySQLiSource->exportToFile() (Line: 60)
BackupMigrate\Drupal\Source\DrupalSiteArchiveSource->getFilesToBackup('/home/clients/restauraciastarydom.sk/restauraciastarydom.sk/') (Line: 68)
BackupMigrate\Core\Source\FileDirectorySource->exportToFile() (Line: 93)
BackupMigrate\Core\Main\BackupMigrate->backup('entire_site', 'download') (Line: 26)
backup_migrate_perform_backup('entire_site', 'download', Array) (Line: 88)
Drupal\backup_migrate\Form\BackupMigrateQuickBackupForm->submitForm(Array, Object)
call_user_func_array(Array, Array) (Line: 111)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 51)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 585)
Drupal\Core\Form\FormBuilder->processForm('backup_migrate_ui_manual_backup_quick', Array, Object) (Line: 314)
Drupal\Core\Form\FormBuilder->buildForm('backup_migrate_ui_manual_backup_quick', Object) (Line: 74)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 574)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
call_user_func_array(Object, Array) (Line: 139)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 62)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 652)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)