Installing Drupal

Hello.

I created a backup of files and DB of a D8 installation (in fact 6 different installations). It was in development local machine (Ubuntu) and moved to a new local machine or localhost (Windows). Both Apache, PHP and mySQL in the Windows system are latest versions. I'm able to browse the frontpage of each of the 6 restored backups but when I click any link on them it shows the "Not Found. The requested URL was not found on this server." error message, Links are correct clean URLs.

What I've done until now:

How to create a sub-theme SASS Bootstrap 3.4.1 for Drupal 8.7 ?

My server is on Ubuntu 18.04

The steps are described here, but I do not understand all the steps :

https://drupal-bootstrap.org/api/bootstrap/docs!Sub-Theming.md/group/sub...

I installed the Drupal Bootstrap theme :

https://www.drupal.org/project/bootstrap

I created my sub-theme, no problem :

Hi Everyone

I am trying to use composer to install a default drupal site. Absolutely basic vanilla.

composer create-project drupal-composer/drupal-project:8.x-dev my_site_name_dir --no-interaction --stability dev

I have had a lot of trouble recently trying to get composer going on my apache web server, both online and in a debian drupal-bitnami environment on my local machine. It just keeps running out of memory, and I have tried various ways of allocating more memory but I am fed up of trying.  So

I have several Drupal 8 sites managed with Composer and Git on Shared Hosting.

I recently had problems with Malware creeping in, and I am pretty sure I have tracked it down to the spammers using the phpunit module in the vendor/ folder to get their files onto my servers. I have removed this folder on the production sites, and fingers crossed no more Malware for a while.

My question is this: I would like to minimise the content of the vendor folder as much as possible, so what is the minimum I need for Drupal to run.

I have migrated my live drupal site to local server inorder to work on a new theme. I was able to to migrate and get it running as well. Until I got this exception error  while visiting the site. I am not able to trouble shoot this error, kindly help me out. This mainly happened after I was playing with File Permissions in my windows Localhost to set a development environment for a new theme

Additional uncaught exception thrown while handling exception.