Drupal 8.x

I have a website in core php with 'users' table that contains simple md5 encrypted password. I want to migrate those password and convert them into drupal hash password.
For e.g. md5 pass: 89fc9bf09b4025ce28c67cb33146d61a
and after migration password will be stored like this: $S$EIMxgxYxwUxrj.uWOr9c4WSQiCvOzASdJUBhVfg8Fsa8zHitUUtq

I tried below code in .yml but thats not convert the encrypted password to drupal hash

Hello,

I like to create a block of d8 bootstrap carousel slideshow. I used this module "https://www.drupal.org/project/bootstrap_simple_carousel"

Slideshow is working just fine but I am having some styling issues. 

Default CSS on image:

I wish customize template for private message. In template I print with kint

{{ kint(content.owner.0) }}

and I got this

content.owner.0 array(6)
→'#user' => Drupal\user\Entity\User(28)
contentsStatic class properties (14)Iterator contents (20)Available methods (154)
→protected values -> array(17)
→'uid' => array(1)
'x-default' => string(1) "1"
→'uuid' => array(1)
'name' => array(1)
'x-default' => string(6) "username"

how can I move to "name" value?

Hello, I am using Drupal 8 and I have noticed a new issue. When a user submits a webform on a landing page, if they go to another page and come back to the landing page, or if they click the "back to form" link after submitting the form, the "Editorial Section" appears on the page, even if the user is anonymous. Two options are available for them, "View" and "Submissions". Luckily, clicking on either of them brings the user to a 404 error, but we do not want users to be seeing the "Editorial Section" after submitting a webform, and on mobile this will be a huge hindrance.

About two or three years ago I created a Drupal 8 site and in the block layout section I could add blocks in the category 'content'. This way you could add an entity field as a block. More or less the same functionality as the Field as Block module

I did this for some fields and it still works fine, but I'm not able to do it again. The gategory 'Content' is not there anymore.