requirewd parameter module is missing??????
Installation and Configuration
The url is 404 Not Found.
The error means
"you've asked to get the module url for a module, but not said which module you want it for"
What is expected:
{jrCore_module_url module="jrAudio" assign="murl"}
Then {$murl} will be 'audio'.
In your template or template override, for whatever reason the function is turning up like this
{jrCore_module_url module="" assign="murl"}
Since there is no module="" part the function cant return the requested info.
Maybe it was a comment on a module thats now disabled?