When a dictionary cannot retrieve values it shows two error types, is it making a kind of chaining or is it just inside the error message?
LoadError: KeyError: key "d" not found
The LoadError is there because the error is happening during an include or using (see ?LoadError). It just prints the error that happened. Just accessing a Dict incorrectly by itself doesn’t show LoadError.
julia> d = Dict()
Dict{Any, Any}()
julia> d[1]
ERROR: KeyError: key 1 not found
Stacktrace:
[1] getindex(h::Dict{Any, Any}, key::Int64)
@ Base .\dict.jl:477
[2] top-level scope
@ REPL[7]:1
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