diff --git a/src/Navigation/Notifications/Repository/Notification.php b/src/Navigation/Notifications/Repository/Notification.php
index 11d3bd6b54..e0e1d2aa98 100644
--- a/src/Navigation/Notifications/Repository/Notification.php
+++ b/src/Navigation/Notifications/Repository/Notification.php
@@ -15,8 +15,8 @@ use Friendica\Database\Database;
 use Friendica\Database\DBA;
 use Friendica\Model\Post\UserNotification;
 use Friendica\Model\Verb;
-use Friendica\Navigation\Notifications\Collection;
-use Friendica\Navigation\Notifications\Entity;
+use Friendica\Navigation\Notifications\Collection\Notifications as NotificationsCollection;
+use Friendica\Navigation\Notifications\Entity\Notification as NotificationEntity;
 use Friendica\Navigation\Notifications\Factory;
 use Friendica\Network\HTTPException\NotFoundException;
 use Friendica\Protocol\Activity;
@@ -41,19 +41,18 @@ class Notification extends BaseRepository
 	}
 
 	/**
-	 * @param array $condition
-	 * @param array $params
-	 * @return Entity\Notification
 	 * @throws NotFoundException
 	 */
-	private function selectOne(array $condition, array $params = []): Entity\Notification
+	private function selectOne(array $condition, array $params = []): NotificationEntity
 	{
-		return parent::_selectOne($condition, $params);
+		$fields = $this->_selectFirstRowAsArray( $condition, $params);
+
+		return $this->factory->createFromTableRow($fields);
 	}
 
-	private function select(array $condition, array $params = []): Collection\Notifications
+	private function select(array $condition, array $params = []): NotificationsCollection
 	{
-		return new Collection\Notifications(parent::_select($condition, $params)->getArrayCopy());
+		return new NotificationsCollection(parent::_select($condition, $params)->getArrayCopy());
 	}
 
 	public function countForUser($uid, array $condition, array $params = []): int
@@ -71,23 +70,21 @@ class Notification extends BaseRepository
 	}
 
 	/**
-	 * @param int $id
-	 * @return Entity\Notification
 	 * @throws NotFoundException
 	 */
-	public function selectOneById(int $id): Entity\Notification
+	public function selectOneById(int $id): NotificationEntity
 	{
 		return $this->selectOne(['id' => $id]);
 	}
 
-	public function selectOneForUser(int $uid, array $condition, array $params = []): Entity\Notification
+	public function selectOneForUser(int $uid, array $condition, array $params = []): NotificationEntity
 	{
 		$condition = DBA::mergeConditions($condition, ['uid' => $uid]);
 
 		return $this->selectOne($condition, $params);
 	}
 
-	public function selectForUser(int $uid, array $condition = [], array $params = []): Collection\Notifications
+	public function selectForUser(int $uid, array $condition = [], array $params = []): NotificationsCollection
 	{
 		$condition = DBA::mergeConditions($condition, ['uid' => $uid]);
 
@@ -98,12 +95,9 @@ class Notification extends BaseRepository
 	/**
 	 * Returns only the most recent notifications for the same conversation or contact
 	 *
-	 * @param int $uid
-	 *
-	 * @return Collection\Notifications
 	 * @throws Exception
 	 */
-	public function selectDetailedForUser(int $uid): Collection\Notifications
+	public function selectDetailedForUser(int $uid): NotificationsCollection
 	{
 		$notify_type = $this->pconfig->get($uid, 'system', 'notify_type');
 		if (!is_null($notify_type)) {
@@ -113,11 +107,11 @@ class Notification extends BaseRepository
 		}
 
 		if (!$this->pconfig->get($uid, 'system', 'notify_like')) {
-			$condition = DBA::mergeConditions($condition, ['NOT `vid` IN (?, ?)', Verb::getID(\Friendica\Protocol\Activity::LIKE), Verb::getID(\Friendica\Protocol\Activity::DISLIKE)]);
+			$condition = DBA::mergeConditions($condition, ['NOT `vid` IN (?, ?)', Verb::getID(Activity::LIKE), Verb::getID(Activity::DISLIKE)]);
 		}
 
 		if (!$this->pconfig->get($uid, 'system', 'notify_announce')) {
-			$condition = DBA::mergeConditions($condition, ['`vid` != ?', Verb::getID(\Friendica\Protocol\Activity::ANNOUNCE)]);
+			$condition = DBA::mergeConditions($condition, ['`vid` != ?', Verb::getID(Activity::ANNOUNCE)]);
 		}
 
 		return $this->selectForUser($uid, $condition, ['limit' => 50, 'order' => ['id' => true]]);
@@ -126,12 +120,9 @@ class Notification extends BaseRepository
 	/**
 	 * Returns only the most recent notifications for the same conversation or contact
 	 *
-	 * @param int $uid
-	 *
-	 * @return Collection\Notifications
 	 * @throws Exception
 	 */
-	public function selectDigestForUser(int $uid): Collection\Notifications
+	public function selectDigestForUser(int $uid): NotificationsCollection
 	{
 		$values = [$uid];
 
@@ -145,14 +136,14 @@ class Notification extends BaseRepository
 		$like_condition = '';
 		if (!$this->pconfig->get($uid, 'system', 'notify_like')) {
 			$like_condition = 'AND NOT `vid` IN (?, ?)';
-			$values[] = Verb::getID(\Friendica\Protocol\Activity::LIKE);
-			$values[] = Verb::getID(\Friendica\Protocol\Activity::DISLIKE);
+			$values[] = Verb::getID(Activity::LIKE);
+			$values[] = Verb::getID(Activity::DISLIKE);
 		}
 
 		$announce_condition = '';
 		if (!$this->pconfig->get($uid, 'system', 'notify_announce')) {
 			$announce_condition = 'AND vid != ?';
-			$values[] = Verb::getID(\Friendica\Protocol\Activity::ANNOUNCE);
+			$values[] = Verb::getID(Activity::ANNOUNCE);
 		}
 
 		$rows = $this->db->p("
@@ -171,7 +162,7 @@ class Notification extends BaseRepository
 		LIMIT 50
 		", ...$values);
 
-		$Entities = new Collection\Notifications();
+		$Entities = new NotificationsCollection();
 		foreach ($rows as $fields) {
 			$Entities[] = $this->factory->createFromTableRow($fields);
 		}
@@ -179,7 +170,7 @@ class Notification extends BaseRepository
 		return $Entities;
 	}
 
-	public function selectAllForUser(int $uid): Collection\Notifications
+	public function selectAllForUser(int $uid): NotificationsCollection
 	{
 		return $this->selectForUser($uid);
 	}
@@ -199,7 +190,7 @@ class Notification extends BaseRepository
 	{
 		$BaseCollection = parent::_selectByBoundaries($condition, $params, $min_id, $max_id, $limit);
 
-		return new Collection\Notifications($BaseCollection->getArrayCopy(), $BaseCollection->getTotalCount());
+		return new NotificationsCollection($BaseCollection->getArrayCopy(), $BaseCollection->getTotalCount());
 	}
 
 	public function setAllSeenForUser(int $uid, array $condition = []): bool
@@ -217,11 +208,9 @@ class Notification extends BaseRepository
 	}
 
 	/**
-	 * @param Entity\Notification $Notification
-	 * @return Entity\Notification
 	 * @throws Exception
 	 */
-	public function save(Entity\Notification $Notification): Entity\Notification
+	public function save(NotificationEntity $Notification): NotificationEntity
 	{
 		$fields = [
 			'uid'           => $Notification->uid,
diff --git a/src/Navigation/Notifications/Repository/Notify.php b/src/Navigation/Notifications/Repository/Notify.php
index 1c793faaee..8c8cde1333 100644
--- a/src/Navigation/Notifications/Repository/Notify.php
+++ b/src/Navigation/Notifications/Repository/Notify.php
@@ -20,7 +20,8 @@ use Friendica\Database\DBA;
 use Friendica\Factory\Api\Mastodon\Notification as NotificationFactory;
 use Friendica\Model;
 use Friendica\Navigation\Notifications\Collection;
-use Friendica\Navigation\Notifications\Entity;
+use Friendica\Navigation\Notifications\Entity\Notification as NotificationEntity;
+use Friendica\Navigation\Notifications\Entity\Notify as NotifyEntity;
 use Friendica\Navigation\Notifications\Exception;
 use Friendica\Navigation\Notifications\Factory;
 use Friendica\Network\HTTPException;
@@ -31,7 +32,7 @@ use Friendica\Util\Emailer;
 use Psr\Log\LoggerInterface;
 
 /**
- * @deprecated since 2022.05 Use \Friendica\Navigation\Notifications\Repository\Notification instead
+ * @deprecated 2022.05 Use `\Friendica\Navigation\Notifications\Repository\Notification` instead
  */
 class Notify extends BaseRepository
 {
@@ -71,15 +72,13 @@ class Notify extends BaseRepository
 	}
 
 	/**
-	 * @param array $condition
-	 * @param array $params
-	 *
-	 * @return Entity\Notify
 	 * @throws HTTPException\NotFoundException
 	 */
-	private function selectOne(array $condition, array $params = []): Entity\Notify
+	private function selectOne(array $condition, array $params = []): NotifyEntity
 	{
-		return parent::_selectOne($condition, $params);
+		$fields = $this->_selectFirstRowAsArray( $condition, $params);
+
+		return $this->factory->createFromTableRow($fields);
 	}
 
 	private function select(array $condition, array $params = []): Collection\Notifies
@@ -104,10 +103,9 @@ class Notify extends BaseRepository
 	/**
 	 * @param int $id
 	 *
-	 * @return Entity\Notify
 	 * @throws HTTPException\NotFoundException
 	 */
-	public function selectOneById(int $id): Entity\Notify
+	public function selectOneById(int $id): NotifyEntity
 	{
 		return $this->selectOne(['id' => $id]);
 	}
@@ -139,14 +137,11 @@ class Notify extends BaseRepository
 	}
 
 	/**
-	 * @param Entity\Notify $Notify
-	 *
-	 * @return Entity\Notify
 	 * @throws HTTPException\NotFoundException
 	 * @throws HTTPException\InternalServerErrorException
 	 * @throws Exception\NotificationCreationInterceptedException
 	 */
-	public function save(Entity\Notify $Notify): Entity\Notify
+	public function save(NotifyEntity $Notify): NotifyEntity
 	{
 		$fields = [
 			'type'          => $Notify->type,
@@ -181,7 +176,7 @@ class Notify extends BaseRepository
 		return $Notify;
 	}
 
-	public function setAllSeenForRelatedNotify(Entity\Notify $Notify): bool
+	public function setAllSeenForRelatedNotify(NotifyEntity $Notify): bool
 	{
 		$condition = [
 			'(`link` = ? OR (`parent` != 0 AND `parent` = ? AND `otype` = ?)) AND `uid` = ?',
@@ -670,7 +665,7 @@ class Notify extends BaseRepository
 		return false;
 	}
 
-	public function shouldShowOnDesktop(Entity\Notification $Notification, string $type = null): bool
+	public function shouldShowOnDesktop(NotificationEntity $Notification, string $type = null): bool
 	{
 		if (is_null($type)) {
 			$type = NotificationFactory::getType($Notification);
@@ -702,7 +697,7 @@ class Notify extends BaseRepository
 		return false;
 	}
 
-	public function createFromNotification(Entity\Notification $Notification): bool
+	public function createFromNotification(NotificationEntity $Notification): bool
 	{
 		$this->logger->info('Start', ['uid' => $Notification->uid, 'id' => $Notification->id, 'type' => $Notification->type]);
 
diff --git a/src/Navigation/Notifications/ValueObject/Introduction.php b/src/Navigation/Notifications/ValueObject/Introduction.php
index 587daa8f4e..6e2c24d340 100644
--- a/src/Navigation/Notifications/ValueObject/Introduction.php
+++ b/src/Navigation/Notifications/ValueObject/Introduction.php
@@ -61,6 +61,34 @@ class Introduction implements \JsonSerializable
 	/** @var string */
 	private $about;
 
+	public function __construct(array $data = [])
+	{
+		$this->label         = $data['label'] ?? '';
+		$this->type          = $data['str_type'] ?? '';
+		$this->intro_id      = $data['intro_id'] ?? -1;
+		$this->madeBy        = $data['madeBy'] ?? '';
+		$this->madeByUrl     = $data['madeByUrl'] ?? '';
+		$this->madeByZrl     = $data['madeByZrl'] ?? '';
+		$this->madeByAddr    = $data['madeByAddr'] ?? '';
+		$this->contactId     = $data['contactId'] ?? -1;
+		$this->photo         = $data['photo'] ?? '';
+		$this->name          = $data['name'] ?? '';
+		$this->url           = $data['url'] ?? '';
+		$this->zrl           = $data['zrl'] ?? '';
+		$this->hidden        = $data['hidden'] ?? false;
+		$this->postNewFriend = $data['postNewFriend'] ?? '';
+		$this->knowYou       = $data['knowYou'] ?? false;
+		$this->note          = $data['note'] ?? '';
+		$this->request       = $data['request'] ?? '';
+		$this->dfrnId        = -1;
+		$this->addr          = $data['addr'] ?? '';
+		$this->network       = $data['network'] ?? '';
+		$this->uid           = $data['uid'] ?? -1;
+		$this->keywords      = $data['keywords'] ?? '';
+		$this->location      = $data['location'] ?? '';
+		$this->about         = $data['about'] ?? '';
+	}
+
 	public function getLabel(): string
 	{
 		return $this->label;
@@ -131,7 +159,7 @@ class Introduction implements \JsonSerializable
 		return $this->postNewFriend;
 	}
 
-	public function getKnowYou(): string
+	public function getKnowYou(): bool
 	{
 		return $this->knowYou;
 	}
@@ -181,34 +209,6 @@ class Introduction implements \JsonSerializable
 		return $this->about;
 	}
 
-	public function __construct(array $data = [])
-	{
-		$this->label         = $data['label'] ?? '';
-		$this->type          = $data['str_type'] ?? '';
-		$this->intro_id      = $data['intro_id'] ?? -1;
-		$this->madeBy        = $data['madeBy'] ?? '';
-		$this->madeByUrl     = $data['madeByUrl'] ?? '';
-		$this->madeByZrl     = $data['madeByZrl'] ?? '';
-		$this->madeByAddr    = $data['madeByAddr'] ?? '';
-		$this->contactId     = $data['contactId'] ?? -1;
-		$this->photo         = $data['photo'] ?? '';
-		$this->name          = $data['name'] ?? '';
-		$this->url           = $data['url'] ?? '';
-		$this->zrl           = $data['zrl'] ?? '';
-		$this->hidden        = $data['hidden'] ?? false;
-		$this->postNewFriend = $data['postNewFriend'] ?? '';
-		$this->knowYou       = $data['knowYou'] ?? false;
-		$this->note          = $data['note'] ?? '';
-		$this->request       = $data['request'] ?? '';
-		$this->dfrnId        = -1;
-		$this->addr          = $data['addr'] ?? '';
-		$this->network       = $data['network'] ?? '';
-		$this->uid           = $data['uid'] ?? -1;
-		$this->keywords      = $data['keywords'] ?? '';
-		$this->location      = $data['location'] ?? '';
-		$this->about         = $data['about'] ?? '';
-	}
-
 	/**
 	 * @inheritDoc
 	 */
diff --git a/src/Network/HTTPClient/Response/CurlResult.php b/src/Network/HTTPClient/Response/CurlResult.php
index a79023132a..30b8be3830 100644
--- a/src/Network/HTTPClient/Response/CurlResult.php
+++ b/src/Network/HTTPClient/Response/CurlResult.php
@@ -246,7 +246,7 @@ class CurlResult implements ICanHandleHttpResponses
 	/** {@inheritDoc} */
 	public function getReturnCode(): string
 	{
-		return $this->returnCode;
+		return (string) $this->returnCode;
 	}
 
 	/** {@inheritDoc} */
diff --git a/src/Network/HTTPClient/Response/GuzzleResponse.php b/src/Network/HTTPClient/Response/GuzzleResponse.php
index 0e246a0cb0..fde67cdd8c 100644
--- a/src/Network/HTTPClient/Response/GuzzleResponse.php
+++ b/src/Network/HTTPClient/Response/GuzzleResponse.php
@@ -100,7 +100,7 @@ class GuzzleResponse extends Response implements ICanHandleHttpResponses, Respon
 	/** {@inheritDoc} */
 	public function getReturnCode(): string
 	{
-		return $this->getStatusCode();
+		return (string) $this->getStatusCode();
 	}
 
 	/** {@inheritDoc} */