Does anyone have any idea about this exception?

java.lang.NullPointerException in Interceptor :io.pedestal.http.impl.servlet-interceptor/stylobate

This exception has something to do with the elements array passed to String/join being null. https://github.com/pedestal/pedestal/blob/master/service/src/io/pedestal/http/request.clj#L27 (enumeration-seq (.getHeaders servlet-req key)) is null.