Re the 308 exceptions, I found something on StackOverflow that is helping - part of the problem is that you need to update the URLs for the Maven repositories in

BuildConfig.groovy

to use

https

rather than

http

but some of the other repositories I'm using have moved or changed name: https://stackoverflow.com/questions/68566240/resolve-error-obtaining-dependencies-failed-to-read-artifact-descriptor-for-o