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Replace - Value cannot be null (Library only)

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@cmora wrote:

I’m trying to use the Replace activity to clean some text and remove any funny characters. It should replace anything matched by “[^a-zA-Z0-9\r\n\t\f\v !”"#$%&’()*+,-./:;<=>?@[\]^_`{|}~]" with an empty string “”

UiPath-Replace-CleanText

It works fine when I call it directly, but not in a Library Process.
When I publish it as part of an Activity and then try to use the Library Activity in a regular process flow, it gives me the following error:

Value cannot be null.
Parameter name: replacement

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