Use exception: MethodError: Cannot `convert` an object of type Vector{String} to an object of type String

New to Julia
1

I try to use the DimensionMismatch excpetion https://docs.julialang.org/en/v1/base/base/#Base.DimensionMismatch

throw(DimensionMismatch(["\n some message \n"]))
gives
MethodError: Cannot convert an object of type Vector{String} to an object of type String

I think the error message should not be a vector. Is this an error in the docs? How can I help with fixing this?

2

The docstring is

DimensionMismatch([msg])

The braces [] signify that msg is optional - it does not mean that you need to pass an array.

For example, you can use either of these:

julia> throw(DimensionMismatch())
ERROR: DimensionMismatch: 
Stacktrace:
 [1] top-level scope
   @ REPL[1]:1

julia> throw(DimensionMismatch("my message"))
ERROR: DimensionMismatch: my message
Stacktrace:
 [1] top-level scope
   @ REPL[2]:1

though the second version is clearly more helpful/informative once a user encounters it.

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