# Steps to replicate the issue
Trying to login on a self-hosted MediaWiki site, after the login process, the site become unreachable.
# What happens?
The debug log shows the following details:
```
[PluggableAuth] Getting PluggableAuth instance
[PluggableAuth] Plugin name: WSOAuth
[exception] [0658d403eb67ddafb7ac738b] /dt/index.php/Special:Version PHP Fatal Error from line 68 of /var/www/html/dt/extensions/WSOAuth/src/AuthenticationProvider/MediaWikiAuth.php: Declaration of WSOAuth\AuthenticationProvider\MediaWikiAuth::setLogger(Psr\Log\LoggerInterface $logger) must be compatible with WSOAuth\AuthenticationProvider\AuthProvider::setLogger(Psr\Log\LoggerInterface $logger): void
#0 [internal function]: MWExceptionHandler::handleFatalError()
#1 {main}
```
# What should have happened instead?
Login process should finish properly
# Software version
|Product|Version|
|--|--|
|MediaWiki|1.43.1|
|PHP|8.3.6 (apache2handler)|
|ICU|74.2|
|MariaDB|10.11.13-MariaDB-0ubuntu0.24.04.1|
|PluggableAuth|7.5.0 (825c652)|
|WSOAuth|9.0.1 (4820686)|
# Conclusions
As far as I understand, the problem is in the definition of the function:
```php
/**
* @inheritDoc
*/
public function setLogger( LoggerInterface $logger ) {
parent::setLogger( $logger );
$this->client->setLogger( $logger );
}
```
the definition should be:
```php
public function setLogger( LoggerInterface $logger ): void {
```
instead.
I tried to manually apply this modification to my installation and it started working.