Multiples VirtualHost for Symfony3 projects in AWS development environment - apache

Question

We have a problem with access to multiple Symfony3 projects that are in different folders and targeted to the same IP address but in different ports on EC2, for example:
project1:
52.1.1.1:8080/login
/var/www/html/projects/project1/
project2:
52.1.1.1:8181/login
/var/www/html/projects/project2/
Happens that when entering the Project 1 (52.1.1.1:8080) it is displayed correctly, but afterward when accessing to Project 2 (52.1.1.1:8181), this fails, strangely deploys the information from Project 1.
In another scenario, when rebooting the apache service and entering the Project2 (52.1.1.1:8181) all is displayed correctly, but if after entering in the Project2, we enter the Project 1 (52.1.1.1:8080) the information from Project2 is displayed, instead of that of the Project 1.
Ports 8080 and 8181 are open.
Apache configuration on the server is the following:
Listen 8181
<VirtualHost *:8181>
DocumentRoot "/var/www/html/projects/project1/web"
DirectoryIndex app.php
<Directory "/var/www/html/projects/project1/web">
Require all granted
Order allow,deny
Allow from All
<IfModule mod_rewrite.c>
Options -MultiViews
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ app.php [QSA,L]
</IfModule>
</Directory>
<Directory /var/www/html/projects/project1>
Options FollowSymlinks
</Directory>
<Directory /var/www/html/projects/project1/web/bundles>
<IfModule mod_rewrite.c>
RewriteEngine Off
</IfModule>
</Directory>
CustomLog /var/www/html/projects/project1/var/logs/reg-access.log combined
ErrorLog /var/www/html/projects/project1/var/logs/reg.error.log
</VirtualHost>
Listen 8080
<VirtualHost *:8080>
DocumentRoot "/var/www/html/projects/project2/web"
DirectoryIndex app.php
<Directory "/var/www/html/projects/project2/web">
Require all granted
Order allow,deny
Allow from All
<IfModule mod_rewrite.c>
Options -MultiViews
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ app.php [QSA,L]
</IfModule>
</Directory>
<Directory /var/www/html/projects/project2>
Options FollowSymlinks
</Directory>
<Directory /var/www/html/projects/project2/web/bundles>
<IfModule mod_rewrite.c>
RewriteEngine Off
</IfModule>
</Directory>
CustomLog /var/www/html/projects/project2/var/logs/reg-rm.log combined
ErrorLog /var/www/html/projects/project2/var/logs/reg.error.log
</VirtualHost>
Any help or ideas about what happens?
UPDATED
To access the Project 1, logs the following error:
[2016-08-17 07:33:12] request.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalErrorException: "Error: Cannot redeclare class Doctrine\Common\Annotations\Annotation\Target" at /var/www/html/projects/project2/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/Annotation/Target.php line 31 {"exception":"[object] (Symfony\Component\Debug\Exception\FatalErrorException(code: 0): Error: Cannot redeclare class Doctrine\Common\Annotations\Annotation\Target at /var/www/html/projects/project2/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/Annotation/Target.php:31)"} []
"Vendors" is referenced strangely to another project

Answer 1

I found a temporary solution, I had to modify the "app/autoload.php" file
Before
$ loader = require __DIR__.'/../vendor/autoload.php';
After
$ loader = require __DIR__.'/../../project1/vendor/autoload.php';
And it all worked properly.
But I communicated with Javier Eguiluz and he suggested to try installing APC on the server, I installed it, rolled back the changes to the file "app/autoload.php" and it worked properly.

Answer 2

EDIT #2 based on your comment.
Listen 8181
<VirtualHost *:8181>
Servername project1.com
...
Listen 8080
<VirtualHost *:8080>
Servername project2.com
DocumentRoot "/var/www/html/projects/project2/web"
DirectoryIndex app.php
On a remote host edit your hosts file to include the above host names.
For example, if you are on a remote Windows host, edit the file "c:\Windows\System32\Drivers\etc\hosts" as follows:
52.1.1.1 project1.com
52.1.1.1 project2.com
Then in your browser use:
http://project1.com:8181
http://project2.com:8080
This should work. Please investigate first before downvoting. Thanks!