I just upgraded via coursier clobbered my scala 2.13.1 version. When I try to move back, I get the following:
https://repo1.maven.org/maven2/io/get-coursier/apps/maven-metadata.xml
No new update since 2022-02-06 13:51:21
Exception in thread "main" coursier.error.ResolutionError$CantDownloadModule: Error downloading org.scala-lang:scala3-compiler_3:2.13.1
not found: https://repo1.maven.org/maven2/org/scala-lang/scala3-compiler_3/2.13.1/scala3-compiler_3-2.13.1.pom
at coursier.Resolve$.$anonfun$validate$1(Resolve.scala:329)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:285)
at scala.collection.Iterator.foreach(Iterator.scala:943)
at scala.collection.Iterator.foreach$(Iterator.scala:943)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
at scala.collection.IterableLike.foreach(IterableLike.scala:74)
at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
at scala.collection.TraversableLike.map(TraversableLike.scala:285)
at scala.collection.TraversableLike.map$(TraversableLike.scala:278)
at scala.collection.AbstractTraversable.map(Traversable.scala:108)
at coursier.Resolve$.validate(Resolve.scala:327)
at coursier.Resolve.validate0$1(Resolve.scala:115)
at coursier.Resolve.$anonfun$ioWithConflicts0$4(Resolve.scala:161)
at coursier.util.Task$.$anonfun$flatMap$extension$1(Task.scala:14)
at coursier.util.Task$.$anonfun$flatMap$extension$1$adapted(Task.scala:14)
at coursier.util.Task$.wrap(Task.scala:84)
at coursier.util.Task$.$anonfun$flatMap$2(Task.scala:14)
at scala.concurrent.Future.$anonfun$flatMap$1(Future.scala:307)
at scala.concurrent.impl.Promise.$anonfun$transformWith$1(Promise.scala:41)
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:64)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)```