Drupal 8.x

cannot see a editor
if i wil create a article or page
i cannot add text
help!!!!!!

I've come across an issue after installing Drupal 8. When I place a block in a region using the block layout, the blocks do not show up on the site. I first encountered the issue after making a view containing links to a RSS feed. After making the view a block, I navigated my way to Admin > Structure > Block Layout. I expected to see the block that I had created appear in the Disabled section.

Hi!

Here is what I am trying to do:

I need a content type "Unique Entity" that spits out the following information onto a page:

Title: Textfield (obviously)
Field 1: Textfield
Field 2: Textfield
Field 3: Item - Modifier

On the final page display it should read like this:

Item A - 3
Item B - 1
Item C - 6
Item D - 1
etc. (Unlimited values allowed)

Field 4: Textfield

I tried setting it up with a Taxonomy Reference field, but I ran into a couple of problems.

Hello, sorry in advance for asking a stupid question but I want to learn how can I accomplish such a scenario in Drupal

After creating a content type named "test", I want to add a button named "test_button" that increase the field "test_number"s value each time when it pressed

I want to override views-view-table.html.twig by add "data-header" as attributes.
Currently my code with td tag is
<td{{ column.attributes.addClass(column_classes).setAttribute('data-header', 'column.header') }}>
How to get column.header for each row in that code ?
if i have 5 column as illustrated, i want to print
- NO as 1st column.header
- FIRST NAME as 2nd column.header
- MGR as 3th column.header
- HIRE Date as 4th column.header
- Deptno as 5th column.header

Thanks in advance.