Post installation

Hello, i am creating a content type on drupal11 with the capability to upload a file.

When I must write the extension type, i receive an error because the "-" is not allowed. I should use the nvda-addon extension.

Is there a manner to bypass this limitation and use the file extension I need?

Say, is there a way to make Drupal feel more like a MERN stack type of website / app? Without the page reload, mainly.
The PWA module comes somewhat close to it for the standard content, after everything is cached.
And I believe there were / are some AJAX options in views as well?
Drupal seems to be extremely fast, that's good.
I'd just like to look into the feel / UX of things.

This appears to be a new development on my site, anonymous users are denied access to various nodes.  As far as I can tell the only unique thing about the nodes I checked is that they reference a specific kml file.  There are many other nodes that display kml files without denying access.  I checked this by using Firefox to access my site as an anonymous user.  I was blocked.  I logged in and was allowed to display the node.  I have no known permission restrictions for viewing published content.

I had included a contact us form at the bottom of most of my pages, but this was deemed a bit to cluttered so I changed it to an single page accessed via a menu.  The advantage of having it on all pages was that I knew the page that interested the visitor. I lose that using a single page.  Is there a technique whereby I can retain the initial page identity and display the form on a separate page?

I have a Drupal 10 installation that runs well with PHP 8.1.31.

No issues.

If I upgrade PHP to 8.2.26 or 8.3.14 , the site shows a blank page after a timeout, while the admin interface remains functional.

[24-Feb-2025 18:20:48] PHP Fatal error:  Maximum execution time of 120 seconds exceeded in \web\core\lib\Drupal\Core\Database\StatementWrapperIterator.php on line 113

There are no further errors.

I tried disabling a number of modules, without success.

How to diagnose what causes the issue ?

We recently upgraded from Drupal 10.2 to 10.4.  Somewhere, something simple (?) broke and we can no longer add Web Forms.  The dropdown list for Text Format is empty.  I have tried going through Configuration... Content Authoring... Text Formats and editors. and I can see the Webform (Default) - DO NOT EDIT is disabled.  When I clicked enable, it required us to use a Bootstrap in our DXPR builder settings.  We selected one, but then it errored out and directed me to the Webform configuration page.