You can do this, though I don’t know if that solves the specific error you are facing:
julia> M = [ exp(i*j) for i in 1:10, j in 1:10 ]
10×10 Matrix{Float64}:
2.71828 7.38906 20.0855 54.5982 … 1096.63 2980.96 8103.08 22026.5
7.38906 54.5982 403.429 2980.96 1.2026e6 8.88611e6 6.566e7 4.85165e8
20.0855 403.429 8103.08 1.62755e5 1.31882e9 2.64891e10 5.32048e11 1.06865e13
54.5982 2980.96 1.62755e5 8.88611e6 1.44626e12 7.8963e13 4.31123e15 2.35385e17
148.413 22026.5 3.26902e6 4.85165e8 1.58601e15 2.35385e17 3.49343e19 5.18471e21
403.429 1.62755e5 6.566e7 2.64891e10 … 1.73927e18 7.01674e20 2.83075e23 1.14201e26
1096.63 1.2026e6 1.31882e9 1.44626e12 1.90735e21 2.09166e24 2.29378e27 2.51544e30
2980.96 8.88611e6 2.64891e10 7.8963e13 2.09166e24 6.23515e27 1.85867e31 5.54062e34
8103.08 6.566e7 5.32048e11 4.31123e15 2.29378e27 1.85867e31 1.5061e35 1.2204e39
22026.5 4.85165e8 1.06865e13 2.35385e17 2.51544e30 5.54062e34 1.2204e39 2.68812e43