I have the same problem as this https://answers.sap.com/questions/12758545/build-failure-while-creating-custom-extension-for-.html
but have hybris vertion 19.05.0-RC17
and the answer in the above question doesn't suit me
i followed this instruction
Steps to Create Custom Extension for Web Services:
You can mark one of your own extensions as a webservice extension:
- Create an extension using the yempty template.
- Add the new extension to localextensions.xml file.
- In the command line, go to the platform directory and call: ant.
- In the command line, go to the new extension directory and call ant webservice_nature -Dextname=customextension.
as a result of 4 steps here is this error