From 6f1361c14792ce6048daeb98df394a505153c74c Mon Sep 17 00:00:00 2001
From: gtlt <17992895+gtlt@users.noreply.github.com>
Date: Tue, 30 Mar 2021 22:05:24 +0200
Subject: [PATCH] fallback to source image if it doesn't exists

---
 Convertor/Convertor.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Convertor/Convertor.php b/Convertor/Convertor.php
index 7987f3e..2961170 100644
--- a/Convertor/Convertor.php
+++ b/Convertor/Convertor.php
@@ -126,6 +126,10 @@ public function convert(string $sourceImageUri, ?string $destinationImageUri = n
         $sourceImageFilename = $this->imageFile->resolve($sourceImageUri);
         $destinationImageFilename = $this->imageFile->resolve($destinationImageUri);
 
+        if(!$this->imageFile->fileExists($sourceImageFilename)) {
+            throw new ConvertorException('Source cached image does not exists ' . $sourceImageUri);
+        }
+        
         if (!$this->imageFile->needsConversion($sourceImageFilename, $destinationImageFilename)) {
             return true;
         }