suplemon: _curses.error: addwstr() on Ubuntu 17.04

I’m getting this error after installing suplemon: Traceback (most recent call last): File "/usr/local/bin/suplemon", line 11, in <module> load_entry_point('Suplemon==0.1.60', 'console_scripts', 'suplemon')() File "/usr/local/lib/python3.5/dist-packages/suplemon/cli.py", line 37, in main app.run() File "/usr/local/lib/python3.5/dist-packages/suplemon/main.py", line 124, in run self.ui.run(self.run_wrapped) File "/usr/local/lib/python3.5/dist-packages/suplemon/ui.py", line 128, in run curses.wrapper(func) File "/usr/lib/python3.5/curses/__init__.py", line 94, in wrapper return func(stdscr, *args, **kwds) File "/usr/local/lib/python3.5/dist-packages/suplemon/main.py", line 138, in run_wrapped self.ui.refresh() File "/usr/local/lib/python3.5/dist-packages/suplemon/ui.py", line 277, in refresh self.refresh_status() File "/usr/local/lib/python3.5/dist-packages/suplemon/ui.py", line 298, in refresh_status self.show_top_status() File "/usr/local/lib/python3.5/dist-packages/suplemon/ui.py", line 335, in show_top_status self.header_win.addstr(0, 0, head, curses.color_pair(0)) _curses.error: addwstr() returned ERR Help? Thanks

Python3 - 3.5.3 Python - 2.7.13 pip3 - 9.0.1 Ubuntu 17.04