Errors in test_visualization animation functions

Traceback (most recent call last):
File "tests/test_visualization.py", line 96, in test_animate_events
ani.save(filename, dpi=300, writer=writer, savefig_kwargs=kwargs)
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\site-packages\matplotlib\animation.py", line 1161, in save
writer.grab_frame(**savefig_kwargs)
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\contextlib.py", line 120, in __exit__
next(self.gen)
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\site-packages\matplotlib\animation.py", line 253, in saving
self.finish()
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\site-packages\matplotlib\animation.py", line 518, in finish
self._run()
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\site-packages\matplotlib\animation.py", line 348, in _run
self._proc = subprocess.Popen(
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\subprocess.py", line 858, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\Users\ryanc\Anaconda3\envs\aolab\lib\subprocess.py", line 1311, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified

Same error above is also in test_animate_trajectory_3d and test_saveanim