Traceback (most recent call last):

 "/home/viki/devel/monarch/code/trunk/catkin_ws/src/rospy_utils/src/test/test_param_utils.py", line 127, in <module>
sysargs='--cov')

 "/opt/ros/hydro/lib/python2.7/dist-packages/rostest/__init__.py", line 142, in rosrun
_stop_coverage(package)

 "/opt/ros/hydro/lib/python2.7/dist-packages/rostest/__init__.py", line 221, in _stop_coverage
_cov.stop()TypeError: can only concatenate list (not "str") to list
Traceback (most recent call last):


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\requests\adapters.py", line 439, in send

resp = conn.urlopen(


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\connectionpool.py", line 724, in urlopen

retries = retries.increment(


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\util\retry.py", line 403, in increment

raise six.reraise(type(error), error, _stacktrace)


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\packages\six.py", line 734, in reraise

raise value.with_traceback(tb)


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\connectionpool.py", line 670, in urlopen

httplib_response = self._make_request(


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\connectionpool.py", line 426, in _make_request

six.raise_from(e, None)


 "<string>", line 3, in raise_from


 "C:\Users\USER\PycharmProjects\StockTrade\venv\lib\site-packages\urllib3\connectionpool.py", line 421, in _make_request

httplib_response = conn.getresponse()


 "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\http\client.py", line 1332, in getresponse

response.begin()


 "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\http\client.py", line 303, in begin

version, status, reason = self._read_status()


 "C:\Users\USER\AppData\Local\Programs\Python\Python38-32\lib\http\client.py", line 272, in _read_status

raise RemoteDisconnected("Remote end closed connection without"
urllib3.exceptions.ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))
