Error using DynamicSystem/rlocus (line 65)

I am just trying to plot the root locus of a transfer function, but for some reason it won't work. I've tried on other computers with Matlab, and it works, but my personal computer does not. I have upgraded from 2016 to the 2019 version of Matlab, and I cannot get it to work. My bode command also does not work.

[Walter Roberson]

I suspect that you have a conflicting function, but which one is difficult to say. You will probably need to use

dbstop if caught error

in order to track down the line that is causing the problem.

[Melissa Romero Martinez]

I also get that error, still do not know why.

[Linlin Wang]

I restarted Matlab and reboot my computer. It works after that.

[Jiayu Li]

A lot of Matlab's problems can be attributed to networking issues, so I'm guessing that calling this function requires license verification via networking. I mean, if you are a Chinese user, you may not be able to establish a link with the official MATLAB server for reasons that are always known. So, the easiest way is to turn on v2ray in tun mode. If you know a little bit about networking just you should know what I mean.

[Jiayu Li]

I'm guessing this because both times I've solved some rather strange problems through this method.