Extract Entities Using Deep Learning - Could not open the address locator

AdrianHughes_ESRIUK

I'm trying to use the  Extract Entities Using Deep Learning tool. The tool works fine and makes good inferences around the inputted text. However when I try to use a locator in the advanced section to actually place points on the map, I get the attached error message. The message is the same if I use the ArcGIS World Geocoding Service or a local Locator stored on my laptop

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