It looks to me like it's not even using the ACS Commons 404 handler.  Do you have the correct configuration on the server that is failing?From the error being thrown, it looks like you have some custom code that you're trying to retrieve a Boolean from a method which doesn't have a return value.

Page 2 and 3 are empty for me

On a daily basis for the past few days, the forum has been spammed by Chinese (I think) posts, that take up multiple pages of content and I assume then get manually deleted by Adobe moderators.  What technology is Adobe using for it's forum that these posts are allowed to happen?  Are these manual p...

You don't have any of the actual fields included in your tab, so nothing will show up.What is the purpose of building another tab to include the Cloud Services tab, rather than just using the Cloud Services tab?

Your question is "How to add a cloud service tab for Touch UI".  That is the code i provided to you.

Try opening CRXDE in incognito mode.If that works, clear your cache for your regular browser.

Can you post your code for DistanceImpl?

We experienced similar issues with the same version of AEM after doing a migration and decided not to continue.  We then did the same with AEM 6.1 and the latest hot fixes and the issue no longer exists.I don't know if upgrading to 6.1 is an option, but i think it would be worth looking at.

Technically you could implement a filter which could output to any log you configure it to write to.package com.project.core.impl.filters; import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletExcepti...

Can you add a screen shot, and post any javascript errors that may occur in the console?