Hello,
Hello,
After reinstalling centos after a crash, I had the same problem.
After several searches, I found the solution. The problem comes from php sessions in /var/lib /php/session
It is therefore necessary to make one:
File permissions in /var/lib/php/ are all wrong if you are using NginX.
chown nginx:nginx /var/lib/php/session/
chown root:nginx /var/lib/php/wsdlcache/
chown root:nginx /var/lib/php/opcache/
if the solution still does not work : chmod -R 777 /var/lib/php/session