There is a typo in Course/Report/Participation/index.php preventing the correct string from being displayed

Around line 158 it reads:

error(get_string('modulemisssingcode','error',$module->name),$baseurl);

It should read:

error(get_string('modulemissingcode','error',$module->name),$baseurl);

(There is one too many 's' in modulemissingcode, preventing the string from properly being returned)