Magento 2 installation from GitHub: blank screen

Question

I have been trying for days to install Magento 2 on a Vagrant box running Ubuntu, Nginx & PHP 7.0.13

When I try to load the setup/installtion wizard I get a blank screen with no errors in the console or Nginx log

Does anyone know what the correct steps are or what is causing this to happen?

If I try to install via php bin/magento setup:install

php bin/magento setup:install --base-url=http://magento.dev/ \
--backend-frontname=admin \
--db-host=localhost --db-name=magento2 --db-user=root --db-password=root \
--admin-firstname=Test --admin-lastname=Test—[email protected] \
--admin-user=admin --admin-password=password --language=en_GB \
--currency=GBP --timezone=Europe/London --use-rewrites=1

I get the following error

  [InvalidArgumentException]   
  Parameter validation failed  

If I try with the command on one line I get the same error:

php bin/magento setup:install --base-url=http://mage.dev --backend-frontname=admin --db-name=magento2 --db-user=root --db-password=magento2 --admin-firstname=Magento --admin-lastname=User [email protected] --admin-user=admin --admin-password=admin123 --language=en_US --currency=USD --timezone=America/Chicago --use-rewrites=1

  [InvalidArgumentException]   
  Parameter validation failed 

What is this error and do I fix it? Why is it so difficult install Magento 2?

** UPDATE ** I've reinstalled from Magento 2 Repo Instead of using the .zip archive but now I get the following screen

When I try to debug the request flow it looks to me like the classMap isn't getting the correct path when trying to autoload:

/home/vagrant/www/./vendor/autoload.php

Answer 1

I had the same issue, but try the following version of composer install:

php bin/magento setup:install --db-host=localhost --db-name=magento --db-user= --db-password= --backend-frontname= --admin-user= --admin-password= --admin-email= --admin-firstname= --admin-lastname= --base-url= --language=en_US --currency=USD --use-rewrites=1 --use-secure=0 --use-secure-admin=0 --cleanup-database

fill the information needed after the each = in the composer command, this worked for me

Answer 2

When you downloaded from git I've found troubles with the master branch. Download the last stable version (2.2.2) branch instead and try that

Answer 3

I know Vagrant used to cause some issues when dealing with several lines as you can see from this commit: https://github.com/boostmyshoporganization/vagrant-magento2/commit/526119804cc175317771de4492c6974e3f4925a5

I suggest you run this command on one single line.

Answer 4

Please ensure you have redirects enabled and allowed on nginx. You can add this by putting the following in your server block in the vhost:

<Directory /var/www/html/>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
    </Directory>

Answer 5

I believe that when installing Magento 2 on a nginx server you have to include the index.php to the URL:

http://www.domain.com/setup/index.php

I believe I've read somewhere that this is currently a bug in the installer.