Drupal 8.x

Hello There,

I am trying to install a premium D8 theme whose developer does not give support anymore. I uploaded the demo theme files in Public-html. I exported the DB into PHPMyadmin. But when I go to settings.php file to add the db details, it does not show the theme at all. I have tried it several times. But I am not sure what mistake I am making. Could anyone please let me know what should I be doing to properly install the theme?

The address of the site is as follows.

https://aliyana31.sg-host.com/

Since friday evening I have the problem, that a site does not load anymore.  Every browser I does gives a task error. I'm talking about the login page. Friday evening I had to make a restart of my pc, cause the pc doesb't not react anymore. Ths icame from chrome with the drupal site. 

The only thing I remember I did to change font awesome to svg and something with repsonsive, I cant remember. There were some probs with font awsome, so I tried to figure out.

So, how can I fix this?

I've been trying to upgrade a client's website to 9.0.0 for the last few days without success.

I typically follow the manual upgrade guide where you download the tarball, remove the old vendor/core folders and contents, copy the new vendor/core folders to take their place, and run /update.php but this breaks the site every time. I've updated all modules before updating, same result. I appreciate any and all help. This site is running on Ubuntu 18.04 VPS with OpenLiteSpeed.

We get this error on the homepage after installing the new files:

My application has led me to define a content type that fulfills my requirements beautifully, but has taken me beyond my capability to import data for the content type.

My content type has a number of normal fields, including some with multiple values. I feel that I can learn how to handle those.

The real challenge comes with a field that is not only a structured paragraph (that is, the paragraph itself has  two fields of its own, which are fortunately just plain text), but permits multiple values of that structured paragraph.

I've created a Timeline content type, that will be referenced by other content types (Events) with the intention of displaying the timeline as a view in every Timeline page, each with its own events showing.