diff --git a/advancedcontentfilter/advancedcontentfilter.php b/advancedcontentfilter/advancedcontentfilter.php
index c03034cd..aeeff77c 100644
--- a/advancedcontentfilter/advancedcontentfilter.php
+++ b/advancedcontentfilter/advancedcontentfilter.php
@@ -36,7 +36,6 @@
 use Friendica\BaseModule;
 use Friendica\Content\Text\Markdown;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\Database\DBA;
 use Friendica\Database\DBStructure;
@@ -62,7 +61,7 @@ function advancedcontentfilter_install()
 	Hook::add('dbstructure_definition'          , __FILE__, 'advancedcontentfilter_dbstructure_definition');
 	DBStructure::performUpdate();
 
-	Logger::notice('installed advancedcontentfilter');
+	DI::logger()->notice('installed advancedcontentfilter');
 }
 
 /*
diff --git a/birdavatar/birdavatar.php b/birdavatar/birdavatar.php
index 9a9dce0a..cd49b183 100644
--- a/birdavatar/birdavatar.php
+++ b/birdavatar/birdavatar.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -27,7 +26,7 @@ function birdavatar_install()
 	Hook::register('addon_settings', __FILE__, 'birdavatar_addon_settings');
 	Hook::register('addon_settings_post', __FILE__, 'birdavatar_addon_settings_post');
 
-	Logger::info('registered birdavatar');
+	DI::logger()->info('registered birdavatar');
 }
 
 /**
diff --git a/blackout/blackout.php b/blackout/blackout.php
index a3f806ff..ac1ee3e6 100644
--- a/blackout/blackout.php
+++ b/blackout/blackout.php
@@ -45,7 +45,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\Core\System;
 use Friendica\DI;
@@ -77,7 +76,7 @@ function blackout_redirect ($b)
 	}
 
 	if (( $date1 <= $now ) && ( $now <= $date2 )) {
-		Logger::notice('redirecting user to blackout page');
+		DI::logger()->notice('redirecting user to blackout page');
 		System::externalRedirect($myurl);
 	}
 }
diff --git a/catavatar/catavatar.php b/catavatar/catavatar.php
index 2bdf0cca..7b5f05c0 100644
--- a/catavatar/catavatar.php
+++ b/catavatar/catavatar.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -27,7 +26,7 @@ function catavatar_install()
 	Hook::register('addon_settings', __FILE__, 'catavatar_addon_settings');
 	Hook::register('addon_settings_post', __FILE__, 'catavatar_addon_settings_post');
 
-	Logger::notice('registered catavatar');
+	DI::logger()->notice('registered catavatar');
 }
 
 /**
diff --git a/fromapp/fromapp.php b/fromapp/fromapp.php
index 8bd27606..bb8a4fe6 100644
--- a/fromapp/fromapp.php
+++ b/fromapp/fromapp.php
@@ -8,7 +8,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 
@@ -17,7 +16,7 @@ function fromapp_install()
 	Hook::register('post_local', 'addon/fromapp/fromapp.php', 'fromapp_post_hook');
 	Hook::register('addon_settings', 'addon/fromapp/fromapp.php', 'fromapp_settings');
 	Hook::register('addon_settings_post', 'addon/fromapp/fromapp.php', 'fromapp_settings_post');
-	Logger::notice("installed fromapp");
+	DI::logger()->notice("installed fromapp");
 }
 
 function fromapp_settings_post($post)
diff --git a/geonames/geonames.php b/geonames/geonames.php
index d14b1e8f..4c5e54d8 100644
--- a/geonames/geonames.php
+++ b/geonames/geonames.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Core\Config\Util\ConfigFileManager;
@@ -45,7 +44,7 @@ function geonames_post_hook(array &$item)
 	 *      - The profile owner must have allowed our addon
 	 */
 
-	Logger::notice('geonames invoked');
+	 DI::logger()->notice('geonames invoked');
 
 	if (!DI::userSession()->getLocalUserId()) {   /* non-zero if this is a logged in user of this system */
 		return;
diff --git a/gnot/gnot.php b/gnot/gnot.php
index 5d0919cb..3801a210 100644
--- a/gnot/gnot.php
+++ b/gnot/gnot.php
@@ -9,7 +9,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Model\Notification;
@@ -20,7 +19,7 @@ function gnot_install()
 	Hook::register('addon_settings_post', 'addon/gnot/gnot.php', 'gnot_settings_post');
 	Hook::register('enotify_mail', 'addon/gnot/gnot.php', 'gnot_enotify_mail');
 
-	Logger::notice("installed gnot");
+	DI::logger()->notice("installed gnot");
 }
 
 /**
diff --git a/googlemaps/googlemaps.php b/googlemaps/googlemaps.php
index b83a9cf9..a0bba8ad 100644
--- a/googlemaps/googlemaps.php
+++ b/googlemaps/googlemaps.php
@@ -8,13 +8,12 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 
 function googlemaps_install()
 {
 	Hook::register('render_location', 'addon/googlemaps/googlemaps.php', 'googlemaps_location');
 
-	Logger::notice('installed googlemaps');
+	DI::logger()->notice('installed googlemaps');
 }
 
 function googlemaps_location(&$item)
diff --git a/gravatar/gravatar.php b/gravatar/gravatar.php
index 6007c433..7fe0d955 100644
--- a/gravatar/gravatar.php
+++ b/gravatar/gravatar.php
@@ -8,7 +8,6 @@
 
 use Friendica\BaseModule;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Core\Config\Util\ConfigFileManager;
@@ -20,7 +19,7 @@ function gravatar_install() {
 	Hook::register('load_config',   'addon/gravatar/gravatar.php', 'gravatar_load_config');
 	Hook::register('avatar_lookup', 'addon/gravatar/gravatar.php', 'gravatar_lookup');
 
-	Logger::notice("registered gravatar in avatar_lookup hook");
+	DI::logger()->notice("registered gravatar in avatar_lookup hook");
 }
 
 function gravatar_load_config(ConfigFileManager $loader)
diff --git a/impressum/impressum.php b/impressum/impressum.php
index f61d7182..0ad34e40 100644
--- a/impressum/impressum.php
+++ b/impressum/impressum.php
@@ -9,7 +9,6 @@
 
 use Friendica\Content\Text\BBCode;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Core\Config\Util\ConfigFileManager;
@@ -20,7 +19,7 @@ function impressum_install()
 	Hook::register('load_config', 'addon/impressum/impressum.php', 'impressum_load_config');
 	Hook::register('about_hook', 'addon/impressum/impressum.php', 'impressum_show');
 	Hook::register('page_end', 'addon/impressum/impressum.php', 'impressum_footer');
-	Logger::notice("installed impressum Addon");
+	DI::logger()->notice("installed impressum Addon");
 }
 
 /**
diff --git a/keycloakpassword/keycloakpassword.php b/keycloakpassword/keycloakpassword.php
index e9809f86..11034ffe 100644
--- a/keycloakpassword/keycloakpassword.php
+++ b/keycloakpassword/keycloakpassword.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -37,7 +36,7 @@ function keycloakpassword_request($client_id, $secret, $url, $params = [])
 	$res = curl_exec($ch);
 
 	if (curl_errno($ch)) {
-		Logger::error(curl_error($ch));
+		DI::logger()->error(curl_error($ch));
 	}
 	curl_close($ch);
 
diff --git a/krynn/krynn.php b/krynn/krynn.php
index fa9db133..b57d827e 100644
--- a/krynn/krynn.php
+++ b/krynn/krynn.php
@@ -11,7 +11,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 
@@ -31,7 +30,7 @@ function krynn_install()
 	Hook::register('addon_settings', 'addon/krynn/krynn.php', 'krynn_settings');
 	Hook::register('addon_settings_post', 'addon/krynn/krynn.php', 'krynn_settings_post');
 
-	Logger::notice("installed krynn");
+	DI::logger()->notice("installed krynn");
 }
 
 function krynn_post_hook(&$item)
diff --git a/leistungsschutzrecht/leistungsschutzrecht.php b/leistungsschutzrecht/leistungsschutzrecht.php
index ec8091ac..891cb6ca 100644
--- a/leistungsschutzrecht/leistungsschutzrecht.php
+++ b/leistungsschutzrecht/leistungsschutzrecht.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\DI;
 
 function leistungsschutzrecht_install()
@@ -168,7 +167,7 @@ function leistungsschutzrecht_cron($b)
 	if ($last) {
 		$next = $last + 86400;
 		if ($next > time()) {
-			Logger::notice('poll intervall not reached');
+			DI::logger()->notice('poll intervall not reached');
 			return;
 		}
 	}
diff --git a/libravatar/libravatar.php b/libravatar/libravatar.php
index 4cd72c83..6cb35331 100644
--- a/libravatar/libravatar.php
+++ b/libravatar/libravatar.php
@@ -8,7 +8,6 @@
 
 use Friendica\Core\Addon;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Core\Config\Util\ConfigFileManager;
@@ -20,7 +19,7 @@ function libravatar_install()
 {
 	Hook::register('load_config',   'addon/libravatar/libravatar.php', 'libravatar_load_config');
 	Hook::register('avatar_lookup', 'addon/libravatar/libravatar.php', 'libravatar_lookup');
-	Logger::notice("registered libravatar in avatar_lookup hook");
+	DI::logger()->notice("registered libravatar in avatar_lookup hook");
 }
 
 function libravatar_load_config(ConfigFileManager $loader)
diff --git a/newmemberwidget/newmemberwidget.php b/newmemberwidget/newmemberwidget.php
index d3b68807..ba7dfb39 100644
--- a/newmemberwidget/newmemberwidget.php
+++ b/newmemberwidget/newmemberwidget.php
@@ -8,7 +8,6 @@
 
 use Friendica\Content\Text\BBCode;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Model\User;
@@ -16,7 +15,7 @@ use Friendica\Model\User;
 function newmemberwidget_install()
 {
 	Hook::register( 'network_mod_init', 'addon/newmemberwidget/newmemberwidget.php', 'newmemberwidget_network_mod_init');
-	Logger::notice('newmemberwidget installed');
+	DI::logger()->notice('newmemberwidget installed');
 }
 
 function newmemberwidget_network_mod_init ($b)
diff --git a/numfriends/numfriends.php b/numfriends/numfriends.php
index 66c9b74a..5652c8f0 100644
--- a/numfriends/numfriends.php
+++ b/numfriends/numfriends.php
@@ -7,7 +7,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 
@@ -16,7 +15,7 @@ function numfriends_install() {
 	Hook::register('addon_settings', 'addon/numfriends/numfriends.php', 'numfriends_settings');
 	Hook::register('addon_settings_post', 'addon/numfriends/numfriends.php', 'numfriends_settings_post');
 
-	Logger::notice("installed numfriends");
+	DI::logger()->notice("installed numfriends");
 }
 
 /**
diff --git a/opmlexport/opmlexport.php b/opmlexport/opmlexport.php
index 3df71275..be1d335c 100644
--- a/opmlexport/opmlexport.php
+++ b/opmlexport/opmlexport.php
@@ -9,7 +9,6 @@
 
 use Friendica\DI;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
 use Friendica\Model\Contact;
 use Friendica\Model\User;
@@ -18,7 +17,7 @@ function opmlexport_install()
 {
 	Hook::register('addon_settings',        __FILE__, 'opmlexport_addon_settings');
 	Hook::register('addon_settings_post',   __FILE__, 'opmlexport_addon_settings_post');
-	Logger::notice('installed opmlexport Addon');
+	DI::logger()->notice('installed opmlexport Addon');
 }
 
 
diff --git a/piwik/piwik.php b/piwik/piwik.php
index fc459a87..b7e9e71c 100644
--- a/piwik/piwik.php
+++ b/piwik/piwik.php
@@ -36,7 +36,6 @@
  */
 
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Core\Config\Util\ConfigFileManager;
@@ -45,7 +44,7 @@ function piwik_install() {
 	Hook::register('load_config', 'addon/piwik/piwik.php', 'piwik_load_config');
 	Hook::register('page_end', 'addon/piwik/piwik.php', 'piwik_analytics');
 
-	Logger::notice("installed piwik addon");
+	DI::logger()->notice("installed piwik addon");
 }
 
 function piwik_load_config(ConfigFileManager $loader)
diff --git a/pumpio/pumpio_sync.php b/pumpio/pumpio_sync.php
index beaf6e81..09548c6d 100644
--- a/pumpio/pumpio_sync.php
+++ b/pumpio/pumpio_sync.php
@@ -1,5 +1,5 @@
 <?php
-use Friendica\Core\Logger;
+
 use Friendica\DI;
 
 function pumpio_sync_run(array $argv, int $argc) {
@@ -8,7 +8,7 @@ function pumpio_sync_run(array $argv, int $argc) {
 	if (function_exists('sys_getloadavg')) {
 		$load = sys_getloadavg();
 		if (intval($load[0]) > DI::config()->get('system', 'maxloadavg', 50)) {
-			Logger::notice('system: load ' . $load[0] . ' too high. Pumpio sync deferred to next scheduled run.');
+			DI::logger()->notice('system: load ' . $load[0] . ' too high. Pumpio sync deferred to next scheduled run.');
 			return;
 		}
 	}
diff --git a/securemail/securemail.php b/securemail/securemail.php
index b56c0cbc..7b412395 100644
--- a/securemail/securemail.php
+++ b/securemail/securemail.php
@@ -8,7 +8,6 @@
 
 use Friendica\Addon\securemail\SecureTestEmail;
 use Friendica\Core\Hook;
-use Friendica\Core\Logger;
 use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Object\EMail\IEmail;
@@ -22,7 +21,7 @@ function securemail_install()
 
 	Hook::register('emailer_send_prepare', 'addon/securemail/securemail.php', 'securemail_emailer_send_prepare', 10);
 
-	Logger::notice('installed securemail');
+	DI::logger()->notice('installed securemail');
 }
 
 /**