From da1bad1ed2013d8fbb0e9f4d33420bfaa5829296 Mon Sep 17 00:00:00 2001
From: Vitor Mattos <vitor@php.rio>
Date: Thu, 16 Jan 2025 12:15:30 -0300
Subject: [PATCH] fix: prevent error when is empty files

Signed-off-by: Vitor Mattos <vitor@php.rio>
---
 lib/Migration/Version11000Date20250114182030.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/Migration/Version11000Date20250114182030.php b/lib/Migration/Version11000Date20250114182030.php
index 22674c99c..3cf9aa1b8 100644
--- a/lib/Migration/Version11000Date20250114182030.php
+++ b/lib/Migration/Version11000Date20250114182030.php
@@ -49,12 +49,14 @@ public function postSchemaChange(IOutput $output, Closure $schemaClosure, array
 			)
 			->orderBy('lim.id');
 		$result = $qb1->executeQuery();
-		$identifyMethods = [];
+		$row = $result->fetch();
+		if (!$row) {
+			return;
+		}
 		$folder = $this->appData->getFolder('/');
 		$file = $folder->newFile('backup-table-libresign_identify_method.csv');
 		$maxId = 0;
 		$fp = $file->write();
-		$row = $result->fetch();
 		$identifyMethods[] = $row;
 		fputcsv($fp, array_keys($row));
 		fputcsv($fp, $row);