Ktor AppEngine - An illegal reflective access operation has occurred #53

Running the code locally after cloning, I get this:

➜ steward ./gradlew appengineRun
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.appengine.tools.development.StreamHandlerFactory (file:/Users/rojepp/google-cloud-sdk/platform/google_appengine/google/appengine/tools/java/lib/impl/appengine-local-runtime.jar) to method java.net.URL.getURLStreamHandler(java.lang.String)
WARNING: Please consider reporting this to the maintainers of com.google.appengine.tools.development.StreamHandlerFactory
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
java.lang.RuntimeException: Unable to create a DevAppServer
at com.google.appengine.tools.development.DevAppServerFactory.doCreateDevAppServer(DevAppServerFactory.java:369)
at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:301)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:383)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:45)
at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:257)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:248)
Caused by: java.lang.ExceptionInInitializerError
at com.google.appengine.tools.development.DevAppServerImpl.(DevAppServerImpl.java:127)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
at com.google.appengine.tools.development.DevAppServerFactory.doCreateDevAppServer(DevAppServerFactory.java:354)
... 5 more
Caused by: java.lang.IllegalStateException: java.lang.NoSuchMethodException: java.net.SocksSocketImpl.()
at com.google.appengine.tools.development.DevSocketImplFactory.(DevSocketImplFactory.java:76)
... 12 more
Caused by: java.lang.NoSuchMethodException: java.net.SocksSocketImpl.()
at java.base/java.lang.Class.getConstructor0(Class.java:3350)
at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2554)
at com.google.appengine.tools.development.DevSocketImplFactory.(DevSocketImplFactory.java:72)