Improve performance of job status updates through caching hashes

lib/utilities/server_helper.py

@@ -32,8 +32,11 @@ def generate_thumbnail_for_job(job, thumb_video_path, thumb_image_path, max_widt
             generate_thumbnail(source_path=source, dest_path=thumb_video_path, max_width=max_width)
         except Exception as e:
             logger.error(f"Error generating thumbnail for {source}: {e}")
-        finally:
+
+        try:
             os.remove(in_progress_path)
+        except FileNotFoundError:
+            pass
 
     # Determine best source file to use for thumbs
     if job.status == RenderStatus.COMPLETED:  # use finished file for thumb