Web Development with Clojure, Third Edition: "[:<> ...]" syntax in hiccup? Page 241 P1.0
Does the syntax work on your machines somehow it’s giving me error?
when calling lifecycle function guestbook.core/mount-components Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it’s defined in.
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page 37
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