I am not sure what “: command not found” means when I run virtualenvwrapper mkvirtualenv command

I am learning Linux and how to set-up a Django environment for the first time. I am not sure what ": command not found" means when I run virtualenvwrapper commands. Below is the command line sequence:

    root@intranet-django:/home/lv/# workon

    root@intranet-django:/home/lv/# mkvirtualenv temp

    Using base prefix '/usr'

    New python executable in /root/.virtualenvs/temp/bin/python3

    Also creating executable in /root/.virtualenvs/temp/bin/python

    Installing setuptools, pip, wheel…done

    :command not found

    root@intranet-django:/home/lv/# workon

    temp

    root@intranet-django:/home/lv/#

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