fix(TaskProcessing): Fallback to getMimeType()

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>

Author: solracsf

core/Controller/TaskProcessingApiController.php

@@ -409,12 +409,16 @@ private function getFileContentsInternal(Task $task, int $fileId): StreamRespons
 
 		$contentType = $node->getMimeType();
 		if (function_exists('mime_content_type')) {
-			$mimeType = mime_content_type($node->fopen('rb'));
-			if ($mimeType !== false) {
-				$mimeType = $this->mimeTypeDetector->getSecureMimeType($mimeType);
-				if ($mimeType !== 'application/octet-stream') {
-					$contentType = $mimeType;
+			try {
+				$mimeType = mime_content_type($node->fopen('rb'));
+				if ($mimeType !== false) {
+					$mimeType = $this->mimeTypeDetector->getSecureMimeType($mimeType);
+					if ($mimeType !== 'application/octet-stream') {
+						$contentType = $mimeType;
+					}
 				}
+			} catch (\Throwable $e) {
+				\OCP\Server::get(LoggerInterface::class)->info('mime_content_type() failed to open node, falling back to getMimeType()', ['exception' => $e]);
 			}
 		}