error.clj

(sp/transform [(sp/filterer odd?) sp/LAST] inc [1 2 3 4])
=> [1 2 4 4]
(sp/select [(sp/filterer odd?) sp/LAST] [1 2 3 4])
java.lang.NullPointerException: 
*e
=>
#error{:cause nil,
       :via [{:type java.lang.NullPointerException, :message nil, :at [clojure.lang.Numbers ops "Numbers.java" 1013]}],
       :trace [[clojure.lang.Numbers ops "Numbers.java" 1013]
               [clojure.lang.Numbers add "Numbers.java" 128]
               [com.rpl.specter$filterer$fn__6601$next_fn__6602 invoke "specter.clj" 229]
               [com.rpl.specter$filterer$fn__6601 invoke "specter.clj" 231]