Drupal 8.x

I wish to upload a MySQl database data with members from an entirely custom (Non CMS) website to bring in members and their data into matching fields in a drupal 8.x.8 website.

Obviously the fields would need to be renamed if I were simply to do a find and replace within a text editor of the insert statements in a *.sql file!

The point is, I could simply copy and paste corresponding field names for Username, email, old non-encrypted password, First name, last name, job title etc fields into those of the new drupal site.

I suppose the questions are:

As I haven't as of yet, discovered a way to get composer to run with an existing site, I would like to ask if it's too much to ask that modules display every version's compatibilities and requirements?

For example:
requires: core v.8.8.0, module xy v.345, module xz v.654
compatible: core v.8.8.9, module xy v.349, module xz v.658

that would considerably reduce current trial-and-error method when upgrading.

So, I just spent way to much time trying to test out Drupal in a subdirectory of one of my primary web spaces.

Turns out all the Apache mod_rewrite .htaccess tips like

  RewriteCond %{REQUEST_URI} !drupal/
  RewriteRule (.*) /drupal/$1 [L]

leave out the fact that if the subdirectory you move Drupal into is "/core" it still won't work, because there is actually a "/core" folder inside the default Drupal installation folder.

I'm starting this post because I want to know if I'm wrong?

On our site, we are getting a log message with a Warning referencing code in a custom module:

After upgrading to version 8.8.5, I can't access the main web page, but I can log in to the admin panel. When I turn on the verbose logging funcionality I receive the following error message:

Drupal\Component\Plugin\Exception\MissingValueContextException: Required contexts without a value: view_mode in Drupal\Core\Plugin\Context\ContextHandler->applyContextMapping() (line 155 of core/lib/Drupal/Core/Plugin/Context/ContextHandler.php).

Hello All,

I'm having some issues getting a drupal theme installed, from what was supposed to be a simple process, the creator of the theme has now advised that I need to use Git & Composer which is well beyond my technical ability. Below is a brief ramble of things that have happened so far to give a bit of background; -

All of my drupal sites are on a web hosting service (cPanel controlled, so assuming shared server with Linux?)