Hello, sir, I ran the code and the following error occurred. I hope you can help me

[sky1899]

gui
引用了不存在的字段 'faceDetect'。

出错 gui>pushbutton2_Callback (line 115)
if(handles.faceDetect==1)

出错 gui_mainfcn (line 95)
feval(varargin{:});

出错 gui (line 42)
gui_mainfcn(gui_State, varargin{:});

出错
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)gui('pushbutton2_Callback',hObject,eventdata,guidata(hObject))
计算 UIControl Callback 时出错。