Omniscape tutorial Error


I do my first steps in Julia and try to reproduce the results of following tutorial:

When I try to run Omniscape:

currmap, flow_pot, norm_current = run_omniscape(…

it occurs following error message:

ERROR: TypeError: in keyword argument reclass_table, expected Array{Union{Missing, T}, 2} where T<:Number, got a value of type Vector{Union{Missing, Float64}}
[1] top-level scope
@ REPL[10]:1

How to solve this error?