使用报错

[chunipo]

dot - graphviz version 2.43.0 (0)
Using render: quartz:quartz
Using device: png:quartz:quartz
libdir = "/usr/local/Cellar/graphviz/2.42.2/lib/graphviz"
Activated plugin library: libgvplugin_dot_layout.6.dylib
Using layout: dot:dot_layout
The plugin configuration file:
	/usr/local/Cellar/graphviz/2.42.2/lib/graphviz/config6
		was successfully loaded.
    render	:  dot dot_json fig gd json json0 map mp pic pov ps quartz svg tk visio vml vrml xdot xdot_json
    layout	:  circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi
    textlayout	:  textlayout
    device	:  bmp canon cgimage cmap cmapx cmapx_np dot dot_json eps exr fig gd gd2 gif gv icns ico imap imap_np ismap jp2 jpe jpeg jpg json json0 mp pct pdf pic pict plain plain-ext png pov ps ps2 psd sgi svg svgz tga tif tiff tk vdx vml vmlz vrml wbmp xdot xdot1.2 xdot1.4 xdot_json
    loadimage	:  (lib) bmp eps gd gd2 gif jpe jpeg jpg pdf png ps svg xbm
Error: output.dot: syntax error in line 4 near '!'