Ambiguity for gemv!

[sw2030]

ERROR: MethodError: LinearAlgebra.BLAS.gemv!(::Char, ::Float64, ::DIA.SparseMatrixDIA{Float64,Int64,Array{Float64,1}}, ::Array{Float64,1}, ::Float64, ::Array{Float64,1}) is ambiguous. Candidates:
  gemv!(tA::Char, alpha::Number, S::DIA.SparseMatrixDIA{Tv1,Ti,V}, b::Array{Tv2,1}, beta::Number, ret::Array{Tv2,1}) where {Tv1, Tv2, Ti, V} in DIA at /home/sw2030/.julia/packages/DIA/n7m9K/src/linalg.jl:113
  gemv!(trans::AbstractChar, alpha::Float64, A::Union{AbstractArray{Float64,1}, AbstractArray{Float64,2}}, X::AbstractArray{Float64,1}, beta::Float64, Y::AbstractArray{Float64,1}) in LinearAlgebra.BLAS at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.1/LinearAlgebra/src/blas.jl:567
Possible fix, define
  gemv!(::Char, ::Float64, ::DIA.SparseMatrixDIA{Float64,Ti,V}, ::Array{Float64,1}, ::Float64, ::Array{Float64,1})

where type of input DIA was

julia> typeof(Pp), typeof(g)
(DIA.SparseMatrixDIA{Float64,Int64,Array{Float64,1}}, Array{Float64,1})