filterDesigner- filter specification doesn't appear

Hi I want to make a FIR Filter like this link https://www.mathworks.com/help/hdlfilter/basic-fir-filter.html?fbclid=IwAR1JJXbVrfxBewa4JcidQE2rSsCvYamAQ31eC6gtOxbTJcbG6DCGEbtJhHY

It should have a filter graph, but it seems it doesn't appear for me.. If is there some libraries i'm missing what is it ? Or how can i solve the problem?

(I'm using mathlab 2019b in ubuntu 18.04 in a virtual machine called parraell)

[Star Strider]

I generally design filters using command line functions, so I do not have much experience with filterDesigner.

I suggest that you Contact Support.

[Ravi]

It seems to be a sporadic issue. Could you please restart MATLAB and check again?