From e1074b04568df81398eb3306c0bd5cdede79355c Mon Sep 17 00:00:00 2001
From: Git'Fellow <12234510+solracsf@users.noreply.github.com>
Date: Tue, 4 Nov 2025 18:33:46 +0100
Subject: [PATCH] fix(PublicPreview): Call getMimetype() on File objects

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>
---
 apps/files_sharing/lib/Controller/PublicPreviewController.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/files_sharing/lib/Controller/PublicPreviewController.php b/apps/files_sharing/lib/Controller/PublicPreviewController.php
index f4015a02f4a43..d0495bb43ee43 100644
--- a/apps/files_sharing/lib/Controller/PublicPreviewController.php
+++ b/apps/files_sharing/lib/Controller/PublicPreviewController.php
@@ -136,7 +136,7 @@ public function getPreview(
 			return $response;
 		} catch (NotFoundException $e) {
 			// If we have no preview enabled, we can redirect to the mime icon if any
-			if ($mimeFallback) {
+			if ($file instanceof \OCP\Files\File && $mimeFallback) {
 				if ($url = $this->mimeIconProvider->getMimeIconUrl($file->getMimeType())) {
 					return new RedirectResponse($url);
 				}