Apache access problem : HTTP 500 plugins/CoreHome/angularjs/notification/notification.directive.html

With both a new install and a update, I do not have any content in the different pages of piwik (dashboard, websites, or config, except for the menu and the header), and the apache2 access log give me the multiple error:

 "GET /~TOTO/piwik/plugins/CoreHome/angularjs/notification/notification.directive.html?cb=8ad997a9c34016a840823b3187dbacb7 HTTP/1.1" 500 1000 "https://fougeriens.org/~jmc/piwik/index.php?module=CoreAdminHome&action=home&idSite=1&perio\
d=day&date=yesterday" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"

I am using piwik with ubuntu 15.04 and apache2 in the “userdir” mod activated (in the public_html directory). The problem exists for a new install and an update.

Do you have any clue ?
Thanks. Maxime.

I solved my problem. Looking in the error.log from apache2 (/var/log/apache2/error.log), i got the error:
/home/XX/public_html/piwik/plugins/.htaccess: Options not allowed here

I commented the line :
#Options -Indexes
and everything is working.