我在python 2.7上使用ROS- Melodic，当我尝试启动文件时，出现以下错误，如下所示，
如何解决此问题？这从未发生过
roslaunch my_robot_description myrobot.launch
... logging to /home/murtaza/.ros/log/7d1ccb5c-a35a-11e9-b27a-000c298dc171/roslaunch-ubuntu-48848.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
Traceback (most recent call last):
File "/opt/ros/melodic/bin/roslaunch", line 35, in <module>
roslaunch.main()
File "/opt/ros/melodic/lib/python2.7/dist-packages/roslaunch/__init__.py", line 326, in main
handle_exception(roslaunch_core, logger, "RLException: ", e)
File "/opt/ros/melodic/lib/python2.7/dist-packages/roslaunch/__init__.py", line 225, in handle_exception
roslaunch_core.printerrlog(msg + str(e))
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa7' in position 131: ordinal not in range(128)