Drupal 8.x

We use paragraphs "insert block as paragraph" to insert blocks into pages.

Recently we have become unable to create or update any "insert block and paragraph" instances. (although existing instances of them still display the correct content on the front end pages)

We are able to create and update instances of other types of paragraph. We are able to place blocks in template regions.

Whenever we try to edit and instance of "insert block as paragraph" a spinning loading icon appears and then nothing happens.

Dear people,
 

Is it possible to have an installation of drupal with two domainnames pointing to the same drupal installation?

drupal8.devel.org 
domainname.com

I tried, but drupal wants to make a new installation.

settings.php is in folder: devel.org/drupal8/sites/drupal8 ,but I get the same result using folder: devel.org/drupal8/sites/default

folder structure

-devel.org
-- devel.org/www
-- devel.org/drupal7
-- devel.org/drupal8
-- devel.org/drupal8/sites/default
-- devel.org/drupal8/sites/drupal8

I created a page in a custom module. I want only the current user to access this page on their behalf.

For example, I am using it with ID 51. If I go to :

/user/51/tasks

I can see this page.

If I go on :

/user/78/tasks

I must have an error 403 access denied.

How to do this ?

We have a typical 3-part environment for our website - Development / Staging / Production.

Is there an easy way, plugin or other tweak that can prevent modules from being updatable in the Production environment? Something that prevents a user from making unwanted code changes in the live site. When we copy down code to the Dev. environment, I would like that ability to update available though.

... or a server-side solution that I could propose to the server administrator?

I am trying to synchronize settings between a dev install and the production install.  At one time I enabled and disabled the Field Layout module and I am not sure if that has anything to do with this error.  I have searched all over google but nothing really makes sense or apply.  When I do the import or the Drush cim I get this error:

[error] Drupal\Core\Config\ConfigImporterException: There were errors validating the config synchronization.

Hi everybody,