Question: The program is making intercept zero even though There is a intercept in regression Fit (A toy code showing the error attached)

I have give this below fit command my data is only continous data either positive or negative float data. Their never any complex number at all.

I use the below fit command

Error, complex argument to max/min

It can be observed it is running into error in C1 I dont know why can someone suggest where should I check and why is this happening kind help.   In Excel we can see the intercept coming big.


I attach the toycode to see the error I get too

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