I wish to create a pie graph of the distribution of categories of a variable names q23, for disabled people only (ie, d14==1)

Running the following command gives me a blank graph:

graph pie q23 if d14==1, over (q23)

Also, the graph icon in my Stata toolbar (version -se 16.0) is disabled, ie, I can only create a graph by typing in the command box graph ....

Could you please help me out?

Many thanks for your time

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