Library function logistic not found when using fit

2023 12 19
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I'm trying to fit a logistic function to my data:
x = 20:10:80;
y = [0, 0.0625, 0.5882, 0.8235, 0.9375, 1, 1];
According to the mathworks documentation (here and here), the fit function should be able to take 'logistic' as the model name. But when I run the function, I get this error
fitObj = fit(x',y', 'logistic');
Error using fittype>iCreateFromLibrary
Library function logistic not found.
I'm using Matlab 2023a, unless this has been updated in 2023b can somebody help me figure out what's going wrong please

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