HelloWorld javax/xml/bind/JAXBException

Following AWS’ own documentation to the letter here https://docs.aws.amazon.com/toolkit-for-eclipse/v1/user-guide/lambda-tutorial.html , I created the Hello World example function. I completed it on a clean install of the latest version of Eclipse (2021-12).
I left the generated code handleRequest(Object input, Context context) as it was because changing it as advised to (String input, … generated an error. When I select ‘Finish’ on the Function Configuration page I get the following error: An internal error occurred during: "Uploading function code to Lambda". javax/xml/bind/JAXBException I have searched extensively on the web for javax/xml/bind/JAXBException solutions and workarounds and found nothing to get me any further. This problem repeats if I try, for example, an S3 function template instead of Hello World.
Any and all insights much appreciated :)