diff --git a/lib/Base.php b/lib/Base.php
index 5e27d68..d1f141c 100644
--- a/lib/Base.php
+++ b/lib/Base.php
@@ -9,6 +9,9 @@
  */
 namespace OCA\UserExternal;
 
+use OCP\Server;
+use Psr\Log\LoggerInterface;
+
 /**
  * Base class for external auth implementations that stores users
  * on their first login in a local table.
@@ -23,6 +26,7 @@ namespace OCA\UserExternal;
  */
 abstract class Base extends \OC\User\Backend {
 	protected $backend = '';
+	protected readonly LoggerInterface $logger;
 
 	/**
 	 * Create new instance, set backend name
@@ -31,6 +35,7 @@ abstract class Base extends \OC\User\Backend {
 	 */
 	public function __construct($backend) {
 		$this->backend = $backend;
+		$this->logger = Server::get(LoggerInterface::class);
 	}
 
 	/**
diff --git a/lib/BasicAuth.php b/lib/BasicAuth.php
index fee7a06..f198059 100644
--- a/lib/BasicAuth.php
+++ b/lib/BasicAuth.php
@@ -37,14 +37,14 @@ class BasicAuth extends Base {
 		);
 		$canary = get_headers($this->authUrl, 1, $context);
 		if (!$canary) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: Not possible to connect to BasicAuth Url: '.$this->authUrl,
 				['app' => 'user_external']
 			);
 			return false;
 		}
 		if (!isset(array_change_key_case($canary, CASE_LOWER)['www-authenticate'])) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: Mis-configured BasicAuth Url: '.$this->authUrl.', provided URL does not do authentication!',
 				['app' => 'user_external']
 			);
@@ -61,7 +61,7 @@ class BasicAuth extends Base {
 		$headers = get_headers($this->authUrl, 1, $context);
 
 		if (!$headers) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: Not possible to connect to BasicAuth Url: '.$this->authUrl,
 				['app' => 'user_external']
 			);
@@ -82,7 +82,7 @@ class BasicAuth extends Base {
 				$this->storeUser($uid);
 				return $uid;
 			case "3":
-				\OC::$server->getLogger()->error(
+				$this->logger->error(
 					'ERROR: Too many redirects from BasicAuth Url: '.$this->authUrl,
 					['app' => 'user_external']
 				);
diff --git a/lib/FTP.php b/lib/FTP.php
index 1aa7e38..c1c95e5 100644
--- a/lib/FTP.php
+++ b/lib/FTP.php
@@ -48,7 +48,7 @@ class FTP extends Base {
 	 */
 	public function checkPassword($uid, $password) {
 		if (false === array_search($this->protocol, stream_get_wrappers())) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: Stream wrapper not available: ' . $this->protocol,
 				['app' => 'user_external']
 			);
diff --git a/lib/IMAP.php b/lib/IMAP.php
index 2ad784f..1695bf3 100644
--- a/lib/IMAP.php
+++ b/lib/IMAP.php
@@ -71,7 +71,7 @@ class IMAP extends Base {
 					$uid = $pieces[0];
 				}
 			} else {
-				\OC::$server->getLogger()->error(
+				$this->logger->error(
 					'ERROR: User has a wrong domain! Expecting: '.$this->domain,
 					['app' => 'user_external']
 				);
@@ -111,7 +111,7 @@ class IMAP extends Base {
 			   $errorcode === 28) {
 			# This is not defined in PHP-8.x
 			# 28: CURLE_OPERATION_TIMEDOUT
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: Could not connect to imap server via curl: ' .  curl_strerror($errorcode),
 				['app' => 'user_external']
 			);
@@ -122,12 +122,12 @@ class IMAP extends Base {
 			# 9: CURLE_REMOTE_ACCESS_DENIED
 			# 67: CURLE_LOGIN_DENIED
 			# 94: CURLE_AUTH_ERROR)
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: IMAP Login failed via curl: ' .  curl_strerror($errorcode),
 				['app' => 'user_external']
 			);
 		} else {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 			'ERROR: IMAP server returned an error: ' . $errorcode . ' / ' . curl_strerror($errorcode),
 				['app' => 'user_external']
 			);
diff --git a/lib/SMB.php b/lib/SMB.php
index ec6e7e7..ac4bda9 100644
--- a/lib/SMB.php
+++ b/lib/SMB.php
@@ -43,7 +43,7 @@ class SMB extends Base {
 		$command = self::SMBCLIENT.' '.escapeshellarg('//' . $this->host . '/dummy').' -U '.$uidEscaped.'%'.$password;
 		$lastline = exec($command, $output, $retval);
 		if ($retval === 127) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: smbclient executable missing',
 				['app' => 'user_external']
 			);
@@ -56,7 +56,7 @@ class SMB extends Base {
 			goto login;
 		} elseif ($retval !== 0) {
 			//some other error
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: smbclient error: ' . trim($lastline),
 				['app' => 'user_external']
 			);
diff --git a/lib/SSH.php b/lib/SSH.php
index 0a95a3b..ea5b09f 100644
--- a/lib/SSH.php
+++ b/lib/SSH.php
@@ -44,7 +44,7 @@ class SSH extends Base {
 	 */
 	public function checkPassword($uid, $password) {
 		if (!extension_loaded('ssh2')) {
-			\OC::$server->getLogger()->error(
+			$this->logger->error(
 				'ERROR: php-ssh2 PECL module missing',
 				['app' => 'user_external']
 			);
diff --git a/lib/WebDavAuth.php b/lib/WebDavAuth.php
index 73c0556..92876ca 100644
--- a/lib/WebDavAuth.php
+++ b/lib/WebDavAuth.php
@@ -27,14 +27,14 @@ class WebDavAuth extends Base {
 	public function checkPassword($uid, $password) {
 		$arr = explode('://', $this->webDavAuthUrl, 2);
 		if (! isset($arr) or count($arr) !== 2) {
-			\OC::$server->getLogger()->error('ERROR: Invalid WebdavUrl: "'.$this->webDavAuthUrl.'" ', ['app' => 'user_external']);
+			$this->logger->error('ERROR: Invalid WebdavUrl: "'.$this->webDavAuthUrl.'" ', ['app' => 'user_external']);
 			return false;
 		}
 		list($protocol, $path) = $arr;
 		$url = $protocol.'://'.urlencode($uid).':'.urlencode($password).'@'.$path;
 		$headers = get_headers($url);
 		if ($headers === false) {
-			\OC::$server->getLogger()->error('ERROR: Not possible to connect to WebDAV Url: "'.$protocol.'://'.$path.'" ', ['app' => 'user_external']);
+			$this->logger->error('ERROR: Not possible to connect to WebDAV Url: "'.$protocol.'://'.$path.'" ', ['app' => 'user_external']);
 			return false;
 		}
 		$returnCode = substr($headers[0], 9, 3);