Error 500 when installation

I got an error 500 when i try to install flarium, i got no log in storage/logs

I changed the file to set the forum to the /public/forum/ directory

antoineok check your webserver log, like Apache error logs for example. The full error must be logged somewhere.

clarkwinkelmann check your webserver log, like Apache error
it's at /var/log/apache2 ?

found it,it was an php error, thanks