[MM-31360] downgrade error logs which doesn't break the flow (#16612)

* downgrade error logs which doesn't break the flow

* reflect revivew comments

model/file_info.go

@@ -161,7 +161,7 @@ func GenerateMiniPreviewImage(img image.Image) *[]byte {
 	buf := new(bytes.Buffer)
 
 	if err := jpeg.Encode(buf, preview, &jpeg.Options{Quality: 90}); err != nil {
-		mlog.Error("Unable to encode image as mini preview jpg", mlog.Err(err))
+		mlog.Info("Unable to encode image as mini preview jpg", mlog.Err(err))
 		return nil
 	}
 	data := buf.Bytes()