Using ring, jetty plugin: No reader function for tag object

[Angel Java Lopez]

Hi!

I have a problem, following the instructions:

https://github.com/ring-clojure/ring/wiki/Getting-Started

I can run the server using the repl

But when I added the plugin, according to:

https://github.com/ring-clojure/ring/wiki/Interactive-Development

and execute

lein ring server

I get the infamous error:

Exception in thread "main" java.lang.RuntimeException: No reader function for tag object, compiling:....:

        at clojure.lang.Compiler.load(Compiler.java:7386)

        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.RuntimeException: No reader function for tag object

        at clojure.lang.LispReader$CtorReader.readTagged(LispReader.java:1245)

        at clojure.lang.LispReader$CtorReader.invoke(LispReader.java:1228)

.....

Using Windows 10, JDK 1.8_074

Current project at:

https://github.com/ajlopez/ClojureSamples/tree/master/Ring/helloring

I tried other tutorials, examples, using the REPL is OK, but using the plugin and lein ring server, does not work

Notable, other ring plugin commands work, like lein ring uberjar

Any cues??

TIA

Angel "Java" Lopez

@ajlopez

[David Bürgin]

Perhaps try downgrading Leiningen to 2.7.1:

lein upgrade 2.7.1

See https://github.com/technomancy/leiningen/issues/2328.


--
David

[James Reeves]

It looks like there's a dependency mismatch between the version of Ring that Lein-Ring injects, and the version you've added to your project file. If you update Ring to 1.6.2 (and lein clean) it should work.

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James Reeves

booleanknot.com

[Angel Java Lopez]

I updated the versions to 1.6.2, but without luck

Downgrading Leiningen works!!! (???)

Thanks!