add error handling of check command

clusters/cl01tl/helm/talos/templates/config.yaml

@@ -22,7 +22,11 @@ data:
     FILES=$(s3cmd ls --no-check-certificate ${BUCKET}/cl01tl/etcd/ |
         awk -v file_match="$FILE_MATCH" '$4 < file_match {print $4}');
 
-    if [ -n "${FILES}" ]; then
+    if [ $? -ne 0 ]; then
+        ERROR=true;
+        echo " ";
+        echo ">> Detected error, will send message to ntfy";
+    elif [ -n "${FILES}" ]; then
         echo " ";
         echo ">> Backups to be removed:";
         echo "$FILES"