julia> basis = ACE.SymmetricBasis(ACE.SphericalMatrix(2,1), B1p, Bsel)
ERROR: MethodError: Cannot `convert` an object of type StaticArrays.SMatrix{5, 3, ComplexF64, 15} to an object of type ACE.SphericalMatrix{2, 1, 5, 3, Float64, 15}
Closest candidates are: