unable to install vfsubscription_j4.0.0_4.4.0

The new error on the page is caused by the unsuccessful installation of the subscription.
Due to the unsuccessful installation of the subscription, the now inconsistent old subscription version runs on a new base version, which does not work.

I am unable to install vfbase_j4.0.0_4.4.1.zip

Joomla\CMS\Filesystem\Folder::delete: Path is not a folder. Path: [ROOT]/components/com_visforms/language
Joomla\CMS\Filesystem\Folder::delete: Path is not a folder. Path: [ROOT]/components/com_visforms/models
Joomla\CMS\Filesystem\Folder::delete: Path is not a folder. Path: [ROOT]/components/com_visforms/views
Joomla\CMS\Filesystem\Folder::delete: Path is not a folder. Path: [ROOT]/components/com_visforms/controllers
Joomla\Filesystem\File::delete: Failed deleting inaccessible file index.html
Package Update: There was an error installing an extension: com_visforms_j4.0.0_4.4.1.zip

I was able to install the following:

Visforms Base Site Package 4.4.0 2023-09-30 Aicha Vack, vi-solutions

Hello,

I'm sorry you're having trouble installing it.
The installations work flawlessly with very few exceptions.

I asked you to just send me the complete log file.
With it I have much more and complete information about the installation processes carried out.
Unfortunately, I can't really get any further with the incomplete 6 lines from the log file alone.
Could you please do that?

The log file has the path: .../administrator/logs/visforms_update.php

An alternative would be the following.
The question is whether you could provide us with an Akeeba backup of the website for debugging.
We use the following platform for this: wetransfer.com/
Use the forum email address as the recipient.

Kind regards, Ingmar