Core tag lib not working after adding custom tld file in WEB-INF sub folder

I am using java 8 with tomcat 8. I have a common.jspf file where i have declared the custom as well as my core tag library.While opening page it is showing

” No tags set found ………”

When i removed the folder which having my custom .tld files, it is working.

I have placed my customs tags in WEB-INF/tags folder
And .tld files in WEB-INF/Custom/tldHome folder
There are arround 8 .tld file.

My jstl declaration is also according to jsp 2.3 specification.

Please remember it is working after removing custom tdl folder
What will be issue.