"Failed to start the session: already started by PHP" error using a CMS

0
votes

I installed a CMS, named Prestashop: it runs under a specific domain, and with a specific VirtualHost configuration on Apache, on a server with other PHP applications.

When I try to login in, as administrator user, I receive the following error (this is the Apache error log):

[Wed Jan 18 00:09:16.059190 2017] [:error] [pid 31253] [client xx.xx.xx.xx:63129] PHP Fatal error: Uncaught exception 'RuntimeException' with message 'Failed to start the session: already started by PHP.' in /opt/wp/apps/prestashop/app/cache/prod/classes.php:108\nStack trace:\n#0 /opt/wp/apps/prestashop/app/cache/prod/classes.php(483): Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start()\n#1 /opt/wp/apps/prestashop/vendor/symfony/symfony/src/Symfony/Component/Security/Csrf/TokenStorage/SessionTokenStorage.php(90): Symfony\Component\HttpFoundation\Session\Session->start()\n#2 /opt/wp/apps/prestashop/vendor/symfony/symfony/src/Symfony/Component/Security/Csrf/CsrfTokenManager.php(54): Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage->hasToken('ANONYMOUS_USER')\n#3 /opt/wp/apps/prestashop/app/cache/prod/classes.php(8196): Symfony\Component\Security\Csrf\CsrfTokenManager->getToken('ANONYMOUS_USER')\n#4 /opt/wp/apps/prestashop/classes/Link.php(722): PrestaShopBundle\Service\Routing\Router->generate('admin_product_c...')\n#5 /opt/wordpre in /opt/wp/apps/prestashop/app/bootstrap.php.cache on line 3216, referer: http://www.xxxxx.xx/adminXXX/index.php?controller=AdminLogin&token=181fa270d47386a8d523bdea6213932c&redirect=AdminDashboard'

PHP session auto_start parameter is set to 0 in php.ini.

I don't understand how can I solve this problem. It can be depends on an Apache or PHP configuration?

Thanks a lot.

1
phpapachesymfonycontent-management-systemprestashop
the error is self-explanatory; look through all your files – Funk Forty Niner
Fred, I know not so well php coding and I was hoping not to have to edit a cms code, what do you mean? – Round Robin
put your files on your own computer that are session-related and do a search for all of them containing session_start(); you'll find it. – Funk Forty Niner
6 or 7 files contains 'session_start()' – Round Robin
See php.net/manual/en/function.session-status.php and stackoverflow.com/q/6249707/1415724 - if you have included files that start the session or require'd files, then that could cause it. – Funk Forty Niner

1 Answers

0
votes

I Just got the same issue with my Symfony 3.2 app, i was upgrading my web server from php 5.5.12 to php 5.6.31 when it happened. After upgrading again to php 7.0.23 everything go back to normal.