 Traceback (most recent call last):


 "/usr/local/lib/python2.7/dist-packages/apache_beam/runners/direct/executor.py", line 312, in call

side_input_values)


 "/usr/local/lib/python2.7/dist-packages/apache_beam/runners/direct/executor.py", line 350, in attempt_call

result = evaluator.finish_bundle()


 "/usr/local/lib/python2.7/dist-packages/apache_beam/runners/direct/transform_evaluator.py", line 818, in finish_bundle

writer.Write(v.value)


 "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/bigquery.py", line 718, in __exit__

self._flush_rows_buffer()


 "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/bigquery.py", line 702, in _flush_rows_buffer

table_id=self.table_id, rows=self.rows_buffer)


 "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/bigquery.py", line 1094, in insert_rows

for k, v in row.iteritems():
AttributeError: 'str' object has no attribute 'iteritems'

youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):

 "youtube_dl\extractor\youtube", line 1426, in _decrypt_signature
