diff --git a/apps/dav/lib/Avatars/AvatarNode.php b/apps/dav/lib/Avatars/AvatarNode.php
index 98ee67d3c781e..b3a605fbb02be 100644
--- a/apps/dav/lib/Avatars/AvatarNode.php
+++ b/apps/dav/lib/Avatars/AvatarNode.php
@@ -69,10 +69,6 @@ public function getETag() {
 	}
 
 	public function getLastModified() {
-		$timestamp = $this->avatar->getFile($this->size)->getMTime();
-		if (!empty($timestamp)) {
-			return (int)$timestamp;
-		}
-		return $timestamp;
+		return $this->avatar->getFile($this->size)->getMTime();
 	}
 }
diff --git a/apps/dav/lib/CardDAV/Xml/Groups.php b/apps/dav/lib/CardDAV/Xml/Groups.php
index 568907813af7d..07aeecb3fa255 100644
--- a/apps/dav/lib/CardDAV/Xml/Groups.php
+++ b/apps/dav/lib/CardDAV/Xml/Groups.php
@@ -14,10 +14,10 @@ class Groups implements XmlSerializable {
 	public const NS_OWNCLOUD = 'http://owncloud.org/ns';
 
 	/**
-	 * @param string $groups
+	 * @param list<string> $groups
 	 */
 	public function __construct(
-		private $groups,
+		private array $groups,
 	) {
 	}
 
diff --git a/apps/dav/lib/Connector/Sabre/Directory.php b/apps/dav/lib/Connector/Sabre/Directory.php
index a8b2438d4bcde..a193417831cd4 100644
--- a/apps/dav/lib/Connector/Sabre/Directory.php
+++ b/apps/dav/lib/Connector/Sabre/Directory.php
@@ -363,10 +363,6 @@ public function moveInto($targetName, $fullSourcePath, INode $sourceNode) {
 			throw new BadRequest('Incompatible node types');
 		}
 
-		if (!$this->fileView) {
-			throw new ServiceUnavailable('filesystem not setup');
-		}
-
 		$destinationPath = $this->getPath() . '/' . $targetName;
 
 
diff --git a/apps/encryption/lib/Util.php b/apps/encryption/lib/Util.php
index 26d04220733cf..20b2c0e580451 100644
--- a/apps/encryption/lib/Util.php
+++ b/apps/encryption/lib/Util.php
@@ -10,6 +10,7 @@
 use OC\Files\Storage\Storage;
 use OC\Files\View;
 use OCA\Encryption\Crypto\Crypt;
+use OCP\Files\Storage\IStorage;
 use OCP\IConfig;
 use OCP\IUser;
 use OCP\IUserManager;
@@ -128,13 +129,7 @@ public function getOwner($path) {
 		return $owner;
 	}
 
-	/**
-	 * get storage of path
-	 *
-	 * @param string $path
-	 * @return Storage|null
-	 */
-	public function getStorage($path) {
+	public function getStorage(string $path): ?IStorage {
 		return $this->files->getMount($path)->getStorage();
 	}
 
diff --git a/apps/files_external/lib/Config/UserContext.php b/apps/files_external/lib/Config/UserContext.php
index 55193c8ef2439..6fe679c60b21a 100644
--- a/apps/files_external/lib/Config/UserContext.php
+++ b/apps/files_external/lib/Config/UserContext.php
@@ -37,7 +37,7 @@ protected function getUserId(): ?string {
 		if ($this->userId !== null) {
 			return $this->userId;
 		}
-		if ($this->session && $this->session->getUser() !== null) {
+		if ($this->session->getUser() !== null) {
 			return $this->session->getUser()->getUID();
 		}
 		try {
diff --git a/apps/user_ldap/lib/LDAPProvider.php b/apps/user_ldap/lib/LDAPProvider.php
index c1aa9a5ac5cde..d9750ae3fcf3d 100644
--- a/apps/user_ldap/lib/LDAPProvider.php
+++ b/apps/user_ldap/lib/LDAPProvider.php
@@ -118,8 +118,8 @@ public function DNasBaseParameter($dn) {
 
 	/**
 	 * Sanitize a DN received from the LDAP server.
-	 * @param array $dn the DN in question
-	 * @return array the sanitized DN
+	 * @param array|string $dn the DN in question
+	 * @return array|string the sanitized DN
 	 */
 	public function sanitizeDN($dn) {
 		return $this->helper->sanitizeDN($dn);
diff --git a/build/psalm-baseline.xml b/build/psalm-baseline.xml
index da9e628dd4d83..fbc5a4ac4fc6a 100644
--- a/build/psalm-baseline.xml
+++ b/build/psalm-baseline.xml
@@ -682,12 +682,6 @@
       <code><![CDATA[new PrivateKeyMissingException('please try to log-out and log-in again', 0)]]></code>
     </TooManyArguments>
   </file>
-  <file src="apps/encryption/lib/Util.php">
-    <LessSpecificReturnStatement>
-      <code><![CDATA[$this->files->getMount($path)->getStorage()]]></code>
-    </LessSpecificReturnStatement>
-    <MoreSpecificReturnType/>
-  </file>
   <file src="apps/federatedfilesharing/lib/Controller/RequestHandlerController.php">
     <InvalidArgument>
       <code><![CDATA[$id]]></code>
diff --git a/lib/public/LDAP/ILDAPProvider.php b/lib/public/LDAP/ILDAPProvider.php
index 584b554aa8153..22f4b872adcb1 100644
--- a/lib/public/LDAP/ILDAPProvider.php
+++ b/lib/public/LDAP/ILDAPProvider.php
@@ -46,8 +46,8 @@ public function DNasBaseParameter($dn);
 
 	/**
 	 * Sanitize a DN received from the LDAP server.
-	 * @param array $dn the DN in question
-	 * @return array the sanitized DN
+	 * @param array|string $dn the DN in question
+	 * @return array|string the sanitized DN
 	 * @since 11.0.0
 	 */
 	public function sanitizeDN($dn);