ResourceReferenceHandlingEvent error when the request webjar resource does not exist

STEPS TO REPRODUCE:

1. Unzip a fresh instance of XWiki 9.11 and configure it to run with MySQL
2. Start XWiki
3. Fill in the required information and follow the steps to complete the Distribution Wizard
4. Right after clicking 'Continue' to finish the Distribution Wizard, on the Home page, click on Admin's profile button next to the Drawer

EXPECTED RESULTS

The Admin's profile page is displayed without any errors.

ACTUAL RESULTS

The Admin's profile page opens, but sometimes, an error is encountered in console, having the following stacktrace:

2017-12-20 11:47:07,208 [http://localhost:8080/xwiki/webjars/wiki%3Axwiki/xwiki-platform-tree-webjar/9.11-rc-1/require-config.min.js?evaluate=true] ERROR o.i.ObservationContextListener - Can't find any begin event corresponding to [class org.xwiki.resource.events.ResourceReferenceHandledEvent (type = [webjars], parameters = [[evaluate] = [[true]]])]

NOTE: It is to be mentioned that the error is not reproducing every time and it occurred on MySQL.