Fix dataset reader.

combo/data/dataset.py

@@ -82,8 +82,8 @@ class UniversalDependenciesDatasetReader(allen_data.DatasetReader):
         for conllu_file in file_path:
             file = pathlib.Path(conllu_file)
             assert conllu_file and file.exists(), f"File with path '{conllu_file}' does not exists!"
-            with file.open("r"):
-                for annotation in conllu.parse_incr(file, fields=self.fields, field_parsers=self.field_parsers):
+            with file.open("r") as f:
+                for annotation in conllu.parse_incr(f, fields=self.fields, field_parsers=self.field_parsers):
                     yield self.text_to_instance(annotation)
 
     @overrides