Error: events.js:167 - throw er; // Unhandled 'error' event

[ghost]

Got the following error while trying to run tsviz despite GraphViz installation and configuration:

events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: spawn /usr/local/bin/dot ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:230:19)
    at onErrorNT (internal/child_process.js:407:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
    at Function.Module.runMain (internal/modules/cjs/loader.js:745:11)
    at startup (internal/bootstrap/node.js:266:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:596:3)
Emitted 'error' event at:
    at Process.ChildProcess._handle.onexit (internal/child_process.js:236:12)
    at onErrorNT (internal/child_process.js:407:16)
    [... lines matching original stack trace ...]
    at bootstrapNodeJSCore (internal/bootstrap/node.js:596:3)

Though it sounds similar to #43, the cause of error is different as seen in the following line Error: spawn /usr/local/bin/dot ENOENT. The error is thrown since tsviz couldn't find /usr/local/bin/dot. It was because GraphViz was installed globally in my machine and the location of dot was /usr/bin/dot. To solve it, create a symbolic link in the expected location: sudo ln -s /usr/bin/dot /usr/local/bin/dot.

Though it's the same issue as #5, I'd let it stay here since it includes the symbolic link workaround and the complete error.