TypeError: GetJobMetrics() missing 1 required positional argument: 'context'

I've seen this error myself, and had multiple users report it, but I don't know what causes it. In this case, it happened when using --flink_submit_uber_jar. But the job succeeded when retried. (EDIT: User reported job worked when retried; I have no idea why that might happen.)

INFO:root:Started Flink job as 2d1bf5003307c580900abe6bbe56d9e8
INFO:root:Job state changed to STOPPED
INFO:root:Job state changed to RUNNING
Traceback (most recent call last):
File "/usr/local/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"_main_", mod_spec)
File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.7/site-packages/apache_beam/examples/wordcount.py", line 138, in <module>
run()
File "/usr/local/lib/python3.7/site-packages/apache_beam/examples/wordcount.py", line 124, in run
query_result = result.metrics().query(empty_lines_filter)
File "/usr/local/lib/python3.7/site-packages/apache_beam/runners/portability/portable_runner.py", line 390, in metrics
beam_job_api_pb2.GetJobMetricsRequest(job_id=self._job_id))
TypeError: GetJobMetrics() missing 1 required positional argument: 'context'