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2019-04-19 05:03:33 -0500 received badge  Famous Question (source)
2019-02-23 15:04:41 -0500 commented answer ImportError: No module named rosmaster.master_api

at the first time, I installed Ros by running "apt-get instal ros-melodic-desktop-full ". But because of some errors in

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2019-02-22 15:48:41 -0500 answered a question ImportError: No module named rosmaster.master_api

I think I had two different versions of Ros. I removed all installed Ros in my system by the following command and insta

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2019-02-19 16:54:51 -0500 asked a question ImportError: No module named rosmaster.master_api

ImportError: No module named rosmaster.master_api Hi, When I run command "roscore", I face with the following error: T