You can find this problem in the XML catalog of the Eclipse IDE I solved it by adding the web-common_3_0.xsd file.

First you need to download this file from the link below:

http://java.sun.com/xml/ns/javaee/web-common_3_0.xsd

Then you will need to follow Eclipse-->Window-->Preferences-->XML (Wild Web Developer) --> Catalogs and add the file you downloaded from the link above. You can also drag and drop the file into the Catalog tab.