how to fix adding input not being double when selecting?

I'm stuck append double, I know the problem is that when I select the first I choose dynamic, when I change the second it selects static when I add the option button, why does the input become double?. how to fix append input not double. but if I first choose static and don't choose anything else, then not problem.

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ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

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