(pprof) svg
failed to execute dot. Is Graphviz installed? Error: exec: "dot": executable file not found in %PATH%
windows下为什么报这个错误，老师帮忙看下呢
graphviz也是配置的的

C:\Users\>dot -version
dot - graphviz version 2.38.0 (20140413.2041)
libdir = "D:\graphviz\release\bin"
Activated plugin library: gvplugin_dot_layout.dll
Using layout: dot:dot_layout
Activated plugin library: gvplugin_core.dll
Using render: dot:core
Using device: dot:dot:core
The plugin configuration file:
        D:\graphviz\release\bin\config6
                was successfully loaded.
    render : cairo dot fig gd gdiplus map pic pov ps svg tk vm
    layout : circo dot fdp neato nop nop1 nop2 osage patchwork
    textlayout : textlayout
    device : bmp canon cmap cmapx cmapx_np dot emf emfplus eps
    loadimage : (lib) bmp eps gd gd2 gif jpe jpeg jpg png ps svg