fix

src/main/java/app/updates/PreviewUpdater.java

@@ -76,18 +76,14 @@ public class PreviewUpdater extends BaseUpdater{
             logger.info("Request: {}", url);
             restTemplate.headForHeaders(url);
             return url;
-        } catch (RestClientException err) {
-            logger.warn("Not found: {}, err: {}", url, err);
-        }
+        } catch (RestClientException err) {}
 
         //Check txt contained url
         url = preview.formatted(domain, map, "url");
         try {
             logger.info("Request: {}", url);
             return restTemplate.getForEntity(url, String.class).getBody().replace("\n", "");
-        } catch (RestClientException err) {
-            logger.warn("Not found: {}, err: {}", url, err);
-        }
+        } catch (RestClientException err) {}
 
         return null;
     }