Unable to install application master branch - CORS issue with tag v0.4.0

[matteobiagiola]

Hi, I'm Matteo,

I'm trying to install the application for end to end functional testing purposes. I cloned the repository (master branch) and I followed the guidelines for the installation.

When I do 'composer install' I get some errors. The following is the output of the composer command:

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.25].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.26].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.27].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.28].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.29].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.30].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.31].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.32].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.33].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.34].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.35].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.36].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.37].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.38].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.7.39].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.18].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.19].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.20].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.21].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.22].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.23].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.24].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.25].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.26].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.27].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.28].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.29].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.30].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.31].
    - phpunit/phpunit 4.6.4 conflicts with symfony/doctrine-bridge[v2.8.32].
    - Conclusion: don't install symfony/symfony v3.0.9
    - Conclusion: don't install symfony/symfony v3.0.8
    - Conclusion: don't install symfony/symfony v3.0.7
    - Conclusion: don't install symfony/symfony v3.0.6
    - Conclusion: don't install symfony/symfony v3.0.5
    - Conclusion: don't install symfony/symfony v3.0.4
    - Conclusion: don't install symfony/symfony v3.0.3
    - Installation request for phpunit/phpunit 4.6.4 -> satisfiable by phpunit/phpunit[4.6.4].
    - Conclusion: don't install symfony/symfony v3.0.2
    - Conclusion: don't install symfony/symfony v3.0.1
    - doctrine/doctrine-fixtures-bundle v2.2.0 requires symfony/doctrine-bridge ~2.1 -> satisfiable by symfony/doctrine-bridge[v2.1.0, v2.1.1, v2.1.10, v2.1.11, v2.1.12, v2.1.13, v2.1.2, v2.1.3, v2.1.4, v2.1.5, v2.1.6, v2.1.7, v2.1.8, v2.1.9, v2.2.0, v2.2.1, v2.2.10, v2.2.11, v2.2.2, v2.2.3, v2.2.4, v2.2.5, v2.2.6, v2.2.7, v2.2.8, v2.2.9, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.4, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - doctrine/doctrine-fixtures-bundle v2.2.1 requires symfony/doctrine-bridge ~2.1 -> satisfiable by symfony/doctrine-bridge[v2.1.0, v2.1.1, v2.1.10, v2.1.11, v2.1.12, v2.1.13, v2.1.2, v2.1.3, v2.1.4, v2.1.5, v2.1.6, v2.1.7, v2.1.8, v2.1.9, v2.2.0, v2.2.1, v2.2.10, v2.2.11, v2.2.2, v2.2.3, v2.2.4, v2.2.5, v2.2.6, v2.2.7, v2.2.8, v2.2.9, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.4, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - don't install symfony/doctrine-bridge v2.2.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.2.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.13|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.14|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.15|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.16|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.17|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.18|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.19|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.20|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.21|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.22|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.23|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.24|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.25|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.26|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.27|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.28|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.29|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.30|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.31|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.32|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.33|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.34|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.35|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.36|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.37|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.38|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.39|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.40|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.41|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.42|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.3.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.4.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.5.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.13|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.6.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.13|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.14|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.15|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.16|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.17|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.18|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.19|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.20|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.21|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.22|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.23|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.24|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.7.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.13|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.14|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.15|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.16|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.17|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.8.9|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.0|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.1|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.10|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.11|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.12|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.13|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.2|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.3|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.4|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.5|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.6|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.7|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.8|don't install symfony/symfony v3.0.0
    - don't install symfony/doctrine-bridge v2.1.9|don't install symfony/symfony v3.0.0
    - Installation request for symfony/symfony 3.0.* -> satisfiable by symfony/symfony[v3.0.0, v3.0.1, v3.0.2, v3.0.3, v3.0.4, v3.0.5, v3.0.6, v3.0.7, v3.0.8, v3.0.9].
    - Installation request for doctrine/doctrine-fixtures-bundle 2.2.*@dev -> satisfiable by doctrine/doctrine-fixtures-bundle[v2.2.0, v2.2.1].

Which dependency should I change to make the installation being successful?

---

Then I checked out this version of the application https://github.com/ivanproskuryakov/Aisel/tree/v0.4.0 to see if there were the same problems. I was able to complete the installation without errors.

The issue that I'm facing now is, I think, a CORS issue. When I access the address http://http://admin.aisel.test/en/ through the browser I get the following error (screenshot of chrome developer tools):

I'm not an expert about CORS but I tried to investigate a little bit searching on the internet. I think that all the things are in place, in order to avoid this issue...so I don't really know what is the problem here.

Thank you for your help!