invalid value

[rainofmine]

When I set heatmap_flag=True, I met some warnings like these.

/home/hooks.hl/anaconda3/envs/test2/lib/python3.6/site-packages/instaboost/help_functions.py:122: RuntimeWarning: invalid value encountered in true_divide
heatmap = heatmap/mm *255
/home/hooks.hl/anaconda3/envs/test2/lib/python3.6/site-packages/instaboost/pointByHeatmap.py:124: RuntimeWarning: invalid value encountered in greater
poses = np.stack(np.where(heatmap>200), axis=1)
/home/hooks.hl/anaconda3/envs/test2/lib/python3.6/site-packages/instaboost/pointByHeatmap.py:126: RuntimeWarning: invalid value encountered in greater
poses = np.stack(np.where(heatmap>150), axis=1)

Could you know whether it affects the result?