Upgrading Drupal

Hi All

I have a Drupal 8 multi-site install. Both sites are in the drupal/sites/ folder.

I have updated the Drupal 8 via the Softaculous installer.

I then run the /update.php on each site.

The update runs fine on the default site but fails on the second site with the following:

Requirements problem

Errors found

always_populate_raw_post_data PHP setting Not set to -1.

Background:
I recently started using Composer to update my websites. After hours of attempts to update Core to 8.4.0 from 8.3.7, I finally did it the old-fashioned way and just restored my original composer.json and composer.lock files. Now I am dipping my feet back into the Composer pond to try what should be an easier update. From Symfony 2.8.26 to 3.3.1. Here is what I have done:

Hello, I need to upgrade my PHP to 5.6 min to get tablefield module back up and running. I can't seem to work out how to do this? I upgrade the core to 7.56 2 months ago.

Any help here would be great. Thanks 

Prior to Drupal 8.4 update was easy:

Hello everyone

If anyone is familiar with using acauia devdesktop i want to know the procedure of upgrading and updating drupal core or themes and modules.

Right now im trying to update drupal 8.4.0 to 8.4.1 using macintosh.

A helpful link or a A step by step solution is greatly appreciated.

I am getting the following error on my main page ever since the upgrade to 8.4.  Any ideas?

• Warning: array_flip(): Can only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 227 of core/lib/Drupal/Core/Entity/EntityStorageBase.php).

Thanks in advance.