Installing Drupal

Hi,

After a lot of preparation work, I try to install a clean version of Drupal (latest version 8.4.5) under MAMP, but I have a lot of errors :(

First of all dozens of lines of this type :

Deprecated function: assert(): Calling assert() with a string argument is deprecated in Drupal\Core\Cache\CacheTagsInvalidator->invalidateTags() (line 25 of core/lib/Drupal/Core/Cache/CacheTagsInvalidator.php).

Then a blank page with :

Uncaught exception thrown in session handler.

Everything appears to be fine as I walked through a normal or standard install. It installed 40 of 40 and then went into the process of building Drupal out then gave this error saying that MySQL had gone away.

I saw some items with this when installing a module but not on a clean install of the latest core. Any ideas?

Text is below; Very strange 

I am trying to install drupal on raspberry pi 3 with nginx and raspbian.

The installation was finished but there is only front page and every menu's tab gives 'not found 404...'

I followed this tutorial: https://www.linuxbabe.com/linux-server/drupal-8-ubuntu-16-04-nginx-maria...

BTW: How can return to installation stage?

Please advise!

I have a Drupal 8 site built on my local machine with Acquia Dev Desktop. I am installing Drupal on AWS EC2, and am running into the following error during the "Database Configuration" step of installation.

Failed to connect to your database server. The server reports the 
following message: SQLSTATE[HY000] [2002] Connection refused.

I have checked the db name, username, password, and port with my config.inc file, and still can't get it to connect.

This is a screenshot of the error screen:

Hi,

I installed XAMPP v3.2.2 to my Windows 10 machine.

And following all the installations successfully.

I got error msg below after open /localhost/drupal/:

I am preparing my computer to use one website on local. I have all ready, all works good, but when i put the name of the website on Google Chrome (all in local), appears this message:

Fatal error: Unsupported operand types in /xxxxxx/xxxxxxx/XXXXX/modules/field/field.info.class.inc on line 512