[RSyncManager] Remove raising error if can't copy, go for an error log only.

orangecontrib/tomwer/core/RSyncManager.py

@@ -109,7 +109,8 @@ class RSyncManager(OWClient, qt.QObject):
             else:
                 err = 'Unable to copy, %s is not a folder, neither than %s' % (
                 target, os.path.dirname(target.rstrip(os.sep)))
-                raise ValueError(err)
+                logger.error(err)
+                return
         if block is True:
             # wait until al thread are ended
             while (source, target) in self.rsyncQueues: