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InvalidArgumentException error install devel module with composer

Hi,

I have problem install modules with composer.

Works good before but seems not working recently.

Drupal version: 8.5

Composer version: 1.6.3

/composer.json file set up correct as following:

Drupal 8.4.5 - multisite - site specific modules problem

Hi!

I am using Drupal 8.4.5 with Acquia Lightning 3.1.0.
Site updates are managed by Composer.
I am using Drush 9.2.0.

I have problem with running site specific modules.
Drush can see them without problem, also they are visible in Drupal admin panel.
But after clearing cache (drush cr) they disappear from moduleHandler service. All modules shared between sites are visible.
Same modules are working alright when moved to shared modules folder.

Installing Drupal 8.5 need help enabling clean URLS

Hello experts! I am new to Drupal 8/CentOS. I am setting up my Drupal8.5-based web server and can use some help enabling Clean URLs to finish the installation (that is the only error I am seeing so far).

I have tried changing the httpd.conf to include "AllowOverride All" under <Directory "/var/www/html">  ..... but that hasnt cleared the warning. When I run apachectl -M | sort, it shows "rewrite_module (shared)".

What am I missing for this to work?

My configuration is below:

OK

WEB SERVER

Apache/2.4.6 (CentOS) PHP/7.2.3

Install Drush inside my Drupal 8 site

Hi All,

I have drupal 8.5 site in my XAMPP locally windows 10 machine.

Have composer installed in my windows machine and use composer to handle everything.

Use composer installed Drush 9.2.1 global.

when run 'drush version' got the following error:

' 'C:\xampp\htdocs\drupal8/vendor/drush/drush/drush' is not recognized as an internal or external command,
operable program or batch file'

have all of the PATH variables edit in my windows system variables.

Use GIT Bash to run got the same error msg.

Lot of errors during installation (8.4.5 version)

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.

On a Drupal 8.4.5 install got SQLSTATE[HY000]: General error: 2006 MySQL server has gone away:

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 

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