Optimization of a function using optim

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Sent from my phone. Please excuse my brevity.

I am attempting to optimize a function I have developed using optim.

I am getting the below error message:

Error in n < 1: 'n' is missing

Could some one provide some additional clarity regarding this message
and
what it entails, as well as, how to rectify this issue.

Thanks

[[alternative HTML version deleted]]

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