Traceback (most recent call last):


 "C:\Users\S10500\AppData\Local\Continuum\anaconda3\lib\site-packages\spyder\widgets\ipythonconsole\client.py", line 575, in show_time

elapsed_time = time.monotonic() - self.t0
TypeError: unsupported operand type(s) for -: 'float' and 'NoneType'


Traceback (most recent call last):

 "/opt/ros/indigo/lib/python2.7/dist-packages/tornado/web.py", line 929, in send_error
self.write_error(status_code, **kwargs)

 "/home/alexv/ROS/gopher_concert/src/flask-ext-catkin/src/flower/views/__init__.py", line 48, in write_error
self.write(message)

 "/opt/ros/indigo/lib/python2.7/dist-packages/tornado/web.py", line 656, in write
raise TypeError("write() only accepts bytes, unicode, and dict objects")
TypeError: write() only accepts bytes, unicode, and dict objects