Drupal 8.x

I have been working with Drupal for a few months, but I am just beginning to get familiar with composer on my localhost. I have completed an install.

When I proceed to my-project/web/core/install.php I receive the message, 'Your PHP installation is too old. Drupal requires at least PHP 7.3.0. See the system requirements page for more information.'

When I check the php version on my machine, I find:

Hi All,

I am getting following error while trying to install "Remote Drupal Dashboard Module".I have found solutions that it can be solved using Drush but I don't have Drush can we do it without Drush?

As the subject says, how (or is it possible without coding) do I configure feeds to import multiple entires into a entity reference field?

Example:
Entities:
Running Race 
Results

1 Running Race can have many results

Therefore in the Running Race entity I have a entity reference field Results (in this I can have many values).

When importing how do I achieve this?

Currently can only reference one value in the Results field:

I'm new both on D8 and Modal forms, and try to learning about them.
in Drupal 7 i opened (with Editable Views and Colorbox Node) editable popups of referenced nodes (e.g editing node B from node A) by specifying the variable 'nid' in this way

node/add/contacts?field_entity_company_field=[nid]&destination=node/[nid]

and specifying the 'colorbox-node' class.

Is there a way to pass to a referenced form the nid of referred content and get the same result with modal forms?

Thanks to all

Hi guys,

On my site I would like to add an image in the header and body of my homepage but once programmed I would like to be able to control the image via an image field in my "Homepage" content type and be able to change it without going through the code.
Currently, I'm just managing to add an image in the 
<div class="image-back>
</div>

image-back{ background :url(...)...}.

but it doesn't take into account the full width of the
I tried with the preprocess, moving the head block into bloc body...

I installed Drupal with Composer, so that I would be able to use modules that have external PHP libraries as dependancies.  This has gone well and I am able to use those modules, but do I need to add every new module using Composer or just the ones with these dependancies?

I have tried doing it via the extend tab successfully, but I don't want to end up with a situation where it only works locally and causes problems when I try to put it online for example.

Thanks