When I click on "Open runtime settings" I see this error message (truncated by me):

Picked up _JAVA_OPTIONS: -XX:+UseG1GC Cloning: 
(...)
f6c080bd0049211021ea59e516d1785b08302515 Error building classpath. Missing unknown f6c080bd0049211021ea59e516d1785b08302515 org.eclipse.jgit.api.errors.JGitInternalException: Missing unknown f6c080bd0049211021ea59e516d1785b08302515 at org.eclipse.jgit.api.CheckoutCommand.call(CheckoutCommand.java:329) at org.eclipse.jgit.api.CheckoutCommand.call(CheckoutCommand.java:133) at clojure.tools.gitlibs.impl$call_with_auth.invokeStatic(impl.clj:50) at clojure.tools.gitlibs.impl$call_with_auth.invoke(impl.clj:41) at clojure.tools.gitlibs.impl$call_with_auth.invokeStatic(impl.clj:43) at clojure.tools.gitlibs.impl$call_with_auth.invoke(impl.clj:41) at clojure.tools.gitlibs.impl$git_checkout.invokeStatic(impl.clj:117) at clojure.tools.gitlibs.impl$git_checkout.invoke(impl.clj:113) at clojure.tools.gitlibs$procure.invokeStatic(gitlibs.clj:52) at clojure.tools.gitlibs$procure.invoke(gitlibs.clj:41) at clojure.tools.deps.alpha.extensions.git$eval1058$fn__1060.invoke(git.clj:42) at clojure.lang.MultiFn.invoke(MultiFn.java:239) at ...
... lots more

No hurry whatsoever, just wanted to let you know

ah, seems like there might have been some git history editing on the tools.deps.alpha repo

that said, I can't see any usage of that within the rest of the article, maybe try removing that as a dependency?

That worked 👍

thanks both, that's fixed now!