ngxtop parser not work
 

Hi.
I have one question about ngxtop tool. There is ngxtop and nginx server on one machine.
When i starting ngxtop tool, there is nothing in it. Empty tables. No status, no request... nothing.
First i have installed python, pip, sqlite3, and pip install ngxtop.
Sometimes i see this error:

File "/usr/local/lib/python2.7/site-packages/ngxtop/ngxtop.py", line 216, in processcursor.execute(insert, r) sqlite3.ProgrammingError: You did not supply a value for binding 3.

So why parser doesn't work?