[yt-users] Lacking `particle_type` in yt 3.4.1 under Python 3.7

I recently installed Anaconda3 with Python 3.7, as well as the latest yt 3.4.1. But when I ran my code, calculating the center of mass and angular momentum, an error saying: count_values() got an unexpected keyword argument 'particle_type' came up. Is there anything I can do to fix it except installing an Anaconda with Python 3.6?