grails.web.mapping.exceptions.UrlMappingException: Unable to establish controller name to dispatch for [null]. Dynamic closure invocation returned null. Check your mapping file is correct, when assigning the controller name as a request parameter it cannot be an optional token!

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via GitHub by rbatllet
, 1 year ago
Unable to establish controller name to dispatch for [null]. Dynamic closure invocation returned null. Check your mapping file is correct, when assigning the controller name as a request parameter it cannot be an optional token!
via Stack Overflow by Shashank Agrawal
, 1 year ago
Unable to establish controller name to dispatch for [null]. Dynamic closure invocation returned null. Check your mapping file is correct, when assigning the controller name as a request parameter it cannot be an optional token!
via GitHub by SmirnoffYM
, 2 years ago
Unable to establish controller name to dispatch for [null]. Dynamic closure invocation returned null. Check your mapping file is correct, when assigning the controller name as a request parameter it cannot be an optional token!
grails.web.mapping.exceptions.UrlMappingException: Unable to establish controller name to dispatch for [null]. Dynamic closure invocation returned null. Check your mapping file is correct, when assigning the controller name as a request parameter it cannot be an optional token!
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

Know the solutions? Share your knowledge to help other developers to debug faster.