fix log print bug for MD

mindspore/ccsrc/minddata/dataset/engine/datasetops/source/manifest_op.cc

@@ -337,7 +337,7 @@ Status ManifestOp::ParseManifestFile() {
       }
     } catch (const std::exception &err) {
       file_handle.close();
-      RETURN_STATUS_UNEXPECTED("Invalid file, failed to parse manifest file: " + line);
+      RETURN_STATUS_UNEXPECTED("Invalid file, failed to parse manifest file: " + file_);
     }
   }
   num_classes_ = classes.size();

mindspore/dataset/vision/py_transforms_util.py

@@ -104,9 +104,9 @@ def decode(img):
         img = Image.open(data)
         return img.convert('RGB')
     except IOError as e:
-        raise ValueError("{0}\nWARNING: Failed to decode given image.".format(e))
+        raise ValueError("{0}\n: Failed to decode given image.".format(e))
     except AttributeError as e:
-        raise ValueError("{0}\nWARNING: Failed to decode, Image might already be decoded.".format(e))
+        raise ValueError("{0}\n: Failed to decode, Image might already be decoded.".format(e))
 
 
 def hwc_to_chw(img):