Unable to create any downloads due to empty fields

[Rajada]

Similar to this issue (https://www.jdownloads.com/forum/index.php?topic=13772.msg48890#msg48890) I cannot create any further downloads. I just updated to Joomla 4 from 3.12 and PHP 8.1 and I'm testing out JDownloads 4.0.20. Standard templates all around. If I try to create a file via the backend, JDownloads complains about one of any fields I left blank not having a default value. IE, if I try to create a file that has an external download, it complains that I left the download url blank. Fill that out and another optional field is complained about (preview file). If I try to submit via the frontend I get an error regarding a bad file date in a database row. I'm unclear as to whether or not this is a bug or a problem with my specific installation.

[Arno]

Hi,
okay. I will check this quickly.

[Rajada]

I would like to additionally add that a non-registered public user cannot view any of the existing files despite the fact that all my categories and downloads are set to public access. Perhaps this points towards a particular issue.

[Arno]

Hi,
I could your problem not reproduce. 
Could I get access to your backend? In this case send me the data via PM.

[Rajada]

I will. Do note that I'm sure there's some other issues since the migration hit the site pretty hard as per usual.

[Arno]

Sorry, but the data are only for frontend.

[Arno]

Sorry, but without your help it is not possible for me to check this in detail.
But it can be that your hoster use strict SQL settings.
I have tried to prevent in the next version 4.0.21 this messages.
So please update and try it again when this version is published.