After connecting Cider to Spacemacs, when trying to set a debug breakpoint on a function using ,-d-b (cider-debug-defun-at-point), I see the following message in the *cider-error* buffer.

3. Unhandled clojure.lang.ExceptionInfo

2. Caused by clojure.lang.LispReader$ReaderException

1. Caused by java.lang.RuntimeException
   No reader function for tag dbg

1 Answer 1


If you're using boot, from the Cider REPL, run this code: (boot.core/load-data-readers!)

See this GitHub issue for details: https://github.com/clojure-emacs/cider/issues/1596

I don't know if this issue happens if you're using leiningen.

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