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Web Development with Clojure, Third Edition: guestbook failing with <textarea> errors (4.2)

Dmitri Sotnikov @dmitri and Scot Brown @svmbrown

With the guestbook app from the “Adding ClojureScript support” chapter, I get an error message in the browser

<textarea> can only have at most one child

I tried it with the guestbook-reagent from the reference code and encountered the same problem.

Does anybody have the same issue and fixed it?
How would I efficiently debug this?

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