Joomla 3.6.5 Erreur 404 - Composant introuvable

[marcelo73]

Salut à tous,

Après une mise a jour Joomla, j'ai cette erreur sur toutes les pages de mon site :

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Vous ne pouvez pas visiter cette page car :

bookmark/favori périmé
Un moteur de recherche possède un listing périmé pour ce site
une adresse erronée
vous n'avez pas accès à cette page
La ressource demandée n'a pas été trouvée
Une erreur est survenue pendant l'exécution de la requête.

Veuillez essayer l'une des pages suivantes :

Page d'accueil

Si les difficultés persistent, merci de contacter l'administrateur de ce site.

Composant introuvable
Call stack
# Function Location
1 JApplicationCms->execute() C:\Seb\PROJET\ski-et-soleil\index.php:49
2 JApplicationSite->doExecute() C:\Seb\PROJET\ski-et-soleil\libraries\cms\application\cms.php:261
3 JApplicationSite->dispatch() C:\Seb\PROJET\ski-et-soleil\libraries\cms\application\site.php:230
4 JComponentHelper::renderComponent() C:\Seb\PROJET\ski-et-soleil\libraries\cms\application\site.php:191

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##
# @package Joomla
# @copyright Copyright (C) 2005 - 2016 Open Source Matters. All rights reserved.
# @license GNU General Public License version 2 or later; see LICENSE.txt
##

##
# READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE!
#
# The line just below this section: 'Options +FollowSymLinks' may cause problems
# with some server configurations. It is required for use of mod_rewrite, but may already
# be set by your server administrator in a way that disallows changing it in
# your .htaccess file. If using it causes your server to error out, comment it out (add # to
# beginning of line), reload your site in your browser and test your sef url's. If they work,
# it has been set by your server administrator and you do not need it set here.
##

## No directory listings
IndexIgnore *

## Can be commented out if causes errors, see notes above.
Options +FollowSymlinks
Options -Indexes

## Mod_rewrite in use.

RewriteEngine On

## Begin - Rewrite rules to block out some common exploits.
# If you experience problems on your site block out the operations listed below
# This attempts to block the most common type of exploit `attempts` to Joomla!
#
# Block out any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
# Block out any script that includes a <script> tag in URL.
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR]
# Block out any script trying to set a PHP GLOBALS variable via URL.
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
# Block out any script trying to modify a _REQUEST variable via URL.
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
# Return 403 Forbidden header and show the content of the root homepage
RewriteRule .* index.php [F]
#
## End - Rewrite rules to block out some common exploits.

## Begin - Custom redirects
#
# If you need to redirect some pages, or set a canonical non-www to
# www redirect (or vice versa), place that code here. Ensure those
# redirects use the correct RewriteRule syntax and the [R=301,L] flags.
#
## End - Custom redirects

##
# Uncomment following line if your webserver's URL
# is not directly related to physical file paths.
# Update Your Joomla! Directory (just / for root).
##

RewriteBase /

## Begin - Joomla! core SEF Section.
#
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
#
# If the requested path and file is not /index.php and the request
# has not already been internally rewritten to the index.php script
RewriteCond %{REQUEST_URI} !^/index\.php
# and the requested path and file doesn't directly match a physical file
RewriteCond %{REQUEST_FILENAME} !-f
# and the requested path and file doesn't directly match a physical folder
RewriteCond %{REQUEST_FILENAME} !-d
# internally rewrite the request to the index.php script
RewriteRule .* index.php [L]
#
## End - Joomla! core SEF Section.


Je me doute qu'un composant est manquant, mais leque ? comment savoir ?

Merci de votre aide, je suis vraiment désemparé face à ça.

Ps : je ne connais que très peu le cms joomla.