Web App Azure (trial version) and codeigniter project

Well, it's my first time using Azure as a host for a codeigniter project, because I decided to mount it on this platform because: 1. I need to connect it to a database in SQLServer (free of charge) for a quick presentation. 2. I do not know at the moment any hosting that can make it work (If you have any suggestion I will gladly review it.)

Well since I already configured and uploaded my project to azure, then configure my routes.php, database.php, config.php and create a web.config file, as follows this distribution of folders:

• root
  • myproject
    • application
      • config
      • database.php
      • routes.php
      • config.php
    • system
    • index.php
    • web.config

It turns out that the page throws an error 500.19, but I have no idea where it might come from .. check my web.config but apparently it's fine. At the moment I do not know if I missed some other configuration, as I said I'm just starting in azure and then if you can give me some tip or advice I will be very grateful ..

Here my web.config:

   <?xml version="1.0" encoding="UTF-8"?>
  <configuration>
      <system.webServer>
        <rewrite>
          <rules>
           <rule name="Index">
              <match url="^(.*)$" />
              <conditions>
                <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
                <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
              </conditions>
                    <action type="Rewrite" url="index.php/{R:1}" appendQueryString="false" />
            </rule>
          </rules>
        </rewrite>
      </system.webServer>
</configuration>