Hi !
I have solutionned my problem.
Thing is that my old install was on an unknown VM system, so the Integrations options in advanced features for proxy server was :
redirect_program /usr/pbi/squidguard-amd64/bin/squidGuard -c /usr/pbi/squidguard-amd64/etc/squidGuard/squidGuard.conf
Not only redirect_program was deprecated, i change for
url_rewrite_program /usr/local/etc/squidGuard -c /usr/local/etc/squidGuard/squidGuard.conf
cause that's what i found on Internet. But it doesn't work.
And when I'm trying to launch Squid without squidguard integration there was no problem.
So, i keep integration option blank, uninstall SquidGuard, then reinstall squidguard. And installation did the job and find the right way :
url_rewrite_program /usr/local/bin/squidGuard -c /usr/local/etc/squidGuard/squidGuard.conf