diff --git a/HOW-Yunohost.md b/HOW-Yunohost.md
index 522fb0f..cc1fc2e 100644
--- a/HOW-Yunohost.md
+++ b/HOW-Yunohost.md
@@ -128,3 +128,101 @@ Mettre en place un crontab, ici 1 fois par jour en précsiant l’heure, par exe
 ## Mise à jour
 
 Pour les mises à jour de statoolinfos, il suffit juste de récuper le dernier fichier `statoolinfos.jar` et de le remplacer.
+
+## Corrections bugs php pour l'application Libreto
+
+Sinon, on a constaté beaucoup de lignes d'erreurs dans les logs de libreto avec `LINE IS NOT MATCHING`. On a changé la ligne 466 dans le fichier **/etc/php/7.4/fpm/php.ini** en rajoutant `& ~E_NOTICE` au bout da ligne 466.
+
+`error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT & ~E_NOTICE `
+
+explication au-dessus de la ligne:
+
+```
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Error handling and logging ;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; This directive informs PHP of which errors, warnings and notices you would like
+; it to take action for. The recommended way of setting values for this
+; directive is through the use of the error level constants and bitwise
+; operators. The error level constants are below here for convenience as well as
+; some common settings and their meanings.
+; By default, PHP is set to take action on all errors, notices and warnings EXCEPT
+; those related to E_NOTICE and E_STRICT, which together cover best practices and
+; recommended coding standards in PHP. For performance reasons, this is the
+; recommend error reporting setting. Your production server shouldn't be wasting
+; resources complaining about best practices and coding standards. That's what
+; development servers and development settings are for.
+; Note: The php.ini-development file has this setting as E_ALL. This
+; means it pretty much reports everything which is exactly what you want during
+; development and early testing.
+;
+; Error Level Constants:
+; E_ALL             - All errors and warnings (includes E_STRICT as of PHP 5.4.0)
+; E_ERROR           - fatal run-time errors
+; E_RECOVERABLE_ERROR  - almost fatal run-time errors
+; E_WARNING         - run-time warnings (non-fatal errors)
+; E_PARSE           - compile-time parse errors
+; E_NOTICE          - run-time notices (these are warnings which often result
+;                     from a bug in your code, but it's possible that it was
+;                     intentional (e.g., using an uninitialized variable and
+;                     relying on the fact it is automatically initialized to an
+;                     empty string)
+; E_STRICT          - run-time notices, enable to have PHP suggest changes
+;                     to your code which will ensure the best interoperability
+;                     and forward compatibility of your code
+; E_CORE_ERROR      - fatal errors that occur during PHP's initial startup
+; E_CORE_WARNING    - warnings (non-fatal errors) that occur during PHP's
+;                     initial startup
+; E_COMPILE_ERROR   - fatal compile-time errors
+; E_COMPILE_WARNING - compile-time warnings (non-fatal errors)
+; E_USER_ERROR      - user-generated error message
+; E_USER_WARNING    - user-generated warning message
+; E_USER_NOTICE     - user-generated notice message
+; E_DEPRECATED      - warn about code that will not work in future versions
+;                     of PHP
+; E_USER_DEPRECATED - user-generated deprecation warnings
+;
+; Common Values:
+;   E_ALL (Show all errors, warnings and notices including coding standards.)
+;   E_ALL & ~E_NOTICE  (Show all errors, except for notices)
+;   E_ALL & ~E_NOTICE & ~E_STRICT  (Show all errors, except for notices and coding standards warnings.)
+;   E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR  (Show only errors)
+; Default Value: E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED
+; Development Value: E_ALL
+; Production Value: E_ALL & ~E_DEPRECATED & ~E_STRICT
+; http://php.net/error-reporting
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT & ~E_NOTICE
+```
+J'essaie aussi de voir après avoir lu les logs d'ignorer un erreur recurrente de php
+
+```
+LINE IS NOT MATCHING [ in /var/www/libreto/libreto/pad.php on line 148" while reading response header from upstream, client: 89.234.140.172, server: libreto.linux07.fr, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.4-fpm-libreto.sock:", host: "libreto.linux07.fr"]
+```
+
+La ligne 148 en question de **/var/www/libreto/libreto/pad.php**
+
+`$txt = file_get_contents($this->url('txt'));`
+
+est dans cette portion de fonction
+
+```
+   public function txt() {
+146     if (!$this->url('txt')) { return; }
+147
+148     $txt = file_get_contents($this->url('txt'));
+149     return $txt;
+150   }
+```
+
+En cherchant, j'essaie d'ignorer l'erreur avec un `@` 
+
+`$txt = @file_get_contents($this->url('txt'));`
+
+sources : 
+
+[https://www.php.net/manual/fr/language.operators.errorcontrol.php](https://www.php.net/manual/fr/language.operators.errorcontrol.php)
+
+et cette discussion: 
+
+[https://stackoverflow.com/questions/272361/how-can-i-handle-the-warning-of-file-get-contents-function-in-php](https://stackoverflow.com/questions/272361/how-can-i-handle-the-warning-of-file-get-contents-function-in-php)
\ No newline at end of file