在ios上跑pocounit报这个warning，Fail to stop result emitter: "SiteSnapshot"

[xt3131]

在ios上跑pocounit报下列warning，有什么办法屏蔽掉吗？

./usr/local/lib/python3.7/site-packages/pocounit/case.py:211: UserWarning: Fail to stop result emitter: "SiteSnapshot". You can report this error to the developers or just ignore it. Error message: Labconfig.getIsLogJavis():False "Traceback (most recent call last): File "/usr/local/lib/python3.7/site-packages/pocounit/case.py", line 207, in run emitter.stop() File "/usr/local/lib/python3.7/site-packages/pocounit/result/site_snapshot.py", line 32, in stop self.snapshot('caseEnd') File "/usr/local/lib/python3.7/site-packages/pocounit/result/site_snapshot.py", line 38, in snapshot self.snapshot_screen(site_id) File "/usr/local/lib/python3.7/site-packages/pocounit/result/site_snapshot.py", line 60, in snapshot_screen b64img, fmt = self.poco.snapshot() File "/usr/local/lib/python3.7/site-packages/poco/pocofw.py", line 433, in snapshot return self.agent.screen.getScreen(width) File "/usr/local/lib/python3.7/site-packages/poco/utils/airtest/screen.py", line 21, in getScreen return base64.b64encode(open(savepath, 'rb').read()), 'png' TypeError: expected str, bytes or os.PathLike object, not NoneType " .format(emitter.class.name, traceback.format_exc()))