Converting to Drupal

Hello folks, 

I have a bootstrap 5 site with some custom js and css. It was hand coded by me in dreamweaver. The Sales & Marketing team is in the final stages of reviewing the layout and theming of the site. 

I have a good amount of experience hand coding with php, html, css, js, mysql. I also have experience administrating a pre-existing Joomla site, and have watched a few hours of youtube tutorials on Drupal 9x admin menu and configuration/etc. I have a few questions before trying to kick this over to a Drupal site.  

Hello all,

I have recently migrated a Drupal 7 windows 2008 server to Drupal 10 win 2016.

I have never used Drupal as a CMS or Windows as a hosting environment before so quite the curve :)

I work for a small company and we are looking to migrate a few of our network resources to a local Drupal instance.

One of these resources is a small web application that consists of two pages.

First page allows our staff to specify themselves and then select a branch from a drop down list.
This then updates the second page. Which is just a list of staff and their current location. (Our company has a lot of staff that move between branches for various reasons. And this helps everyone stay in the loop.)

What are the possible ways to use the _validate and _submit functions to controller in drupal8 

How to solve this? My site was developed with Drupal 9, but I have this error to deploy it in production..

The website encountered an unexpected error. Please try again later.
TypeError: Unsupported operand types: array + bool in Drupal\Core\Routing\RouteProvider->preLoadRoutes() (line 239 of core/lib/Drupal/Core/Routing/RouteProvider.php).

Hi all,

I am relatively new to using Drupal and was looking for some advice. I have setup a Drupal 9 site locally without issue.

I have thousands of HTML files (and associated images) that I want to automatically import into my site.

There are quite a few modules I have run across that are available for D7 that seemed to do this but I haven't found a straightforward way to accomplish this using D9.

I've looked at some of the Migration tools but I haven't found any examples of how to import HTML files, all the examples seems to be SQL or CSV content.