I have solved the problem by this way:
check any string similar to this in web.xml file of Web project:
<param-value>/WEB-INF/conf/struts-config.xml,/WEB-INF/conf/app-struts-config.xml</param-value>
If yes, change to this first:
<param-value>/WEB-INF/conf/struts-config.xml</param-value>
After successfully migration, restore the web.xml file.