Error in mul!(c,a,b) if size(b) = (n,1)

General Usage
8

Yes, sure, here is a minimal example (with the only difference that the y data would be the data of my student):

julia> x = collect(1:10);

julia> y = rand(10,1);

julia> using LsqFit

julia> @. model(x, p) = p[1]*exp(-x*p[2])
model (generic function with 1 method)

julia> p0 = rand(2)
2-element Array{Float64,1}:
 0.4058105988552596
 0.5830419304135694

julia> fit = curve_fit(model, x, y, p0)
ERROR: MethodError: no method matching mul!(::Array{Float64,1}, ::LinearAlgebra.Transpose{Float64,Array{Float64,2}}, ::Array{Float64,2}, ::Bool, ::Bool)
Closest candidates are:
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