Broken dependency?

[AxelRHD]

I am very new to clojure and now was giving catacumba a try (with leiningen).

Following the instructions in the quick start area, there is an error by retrieving the dependencies after lein run:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Exception in thread "main" java.lang.IncompatibleClassChangeError: Method ratpack.server.RatpackServer.of(Lratpack/func/Action;)Lratpack/server/RatpackServer; must be InterfaceMethodref constant, compiling:(/tmp/form-init11947645225559549126.clj:1:74) at clojure.lang.Compiler.load(Compiler.java:7391) at clojure.lang.Compiler.loadFile(Compiler.java:7317) at clojure.main$load_script.invokeStatic(main.clj:275) at clojure.main$init_opt.invokeStatic(main.clj:277) at clojure.main$init_opt.invoke(main.clj:277) at clojure.main$initialize.invokeStatic(main.clj:308) at clojure.main$null_opt.invokeStatic(main.clj:342) at clojure.main$null_opt.invoke(main.clj:339) at clojure.main$main.invokeStatic(main.clj:421) at clojure.main$main.doInvoke(main.clj:384) at clojure.lang.RestFn.invoke(RestFn.java:421) at clojure.lang.Var.invoke(Var.java:383) at clojure.lang.AFn.applyToHelper(AFn.java:156) at clojure.lang.Var.applyTo(Var.java:700) at clojure.main.main(main.java:37) Caused by: java.lang.IncompatibleClassChangeError: Method ratpack.server.RatpackServer.of(Lratpack/func/Action;)Lratpack/server/RatpackServer; must be InterfaceMethodref constant at catacumba.impl.server$run_server.invokeStatic(server.clj:145) at catacumba.impl.server$run_server.invoke(server.clj:109) at cata_web.core$_main.invokeStatic(core.clj:15) at cata_web.core$_main.doInvoke(core.clj:13) at clojure.lang.RestFn.invoke(RestFn.java:397) at clojure.lang.Var.invoke(Var.java:375) at user$eval5.invokeStatic(form-init11947645225559549126.clj:1) at user$eval5.invoke(form-init11947645225559549126.clj:1) at clojure.lang.Compiler.eval(Compiler.java:6927) at clojure.lang.Compiler.eval(Compiler.java:6917) at clojure.lang.Compiler.load(Compiler.java:7379) ... 14 more

As I unterstand, it is a problem with the SLF4J-dependency?

Thankfull for every help.