XIO: fatal IO error 0 (Success) on X server "localhost:10.0"

[ppbangKGT]

Hi, thx for your nice work! When I read the code and try ro run python vis_label.py to produce label, I meet this error:XIO: fatal IO error 0 (Success) on X server "localhost:10.0 after 18050 requests (18050 known processed) with 862 events remaining. How can I solve this? I wonder if you could give some advice. Thanks for your time!