fixup

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

apps/files_external/lib/Lib/Storage/AmazonS3.php

@@ -111,10 +111,16 @@ private function invalidateCache(string $key): void {
 	private function headObject(string $key): array|false {
 		if (!isset($this->objectCache[$key])) {
 			try {
-				$this->objectCache[$key] = $this->getConnection()->headObject([
+				$result = $this->getConnection()->headObject([
 					'Bucket' => $this->bucket,
 					'Key' => $key
 				] + $this->getSSECParameters())->toArray();
+
+				if ($result->hasKey('x-amz-delete-marker')) {
+					$this->objectCache[$key] = false;
+				} else {
+					$this->objectCache[$key] = $result;
+				}
 			} catch (S3Exception $e) {
 				if ($e->getStatusCode() >= 500) {
 					throw $e;