Installed the new CQ5.6 instance .Getting 500 error in login page.

Getting the error :

An error occurred at line: 98 in the jsp file: /libs/granite/core/components/login/login.jsp The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files 95:             ? request.getParameter(PARAM_NAME_REASON) 96:             : ""; 97: 98:  if (!StringUtils.isEmpty(reason)) { 99:   if (validReasons.containsKey(reason)) { 100:    reason = validReasons.get(reason); 101:   } else { An error occurred at line: 98 in the jsp file: /libs/granite/core/components/login/login.jsp The method isEmpty(CharSequence) in the type StringUtils is not applicable for the arguments (String) 95:             ? request.getParameter(PARAM_NAME_REASON) 96:             : ""; 97: 98:  if (!StringUtils.isEmpty(reason)) { 99:   if (validReasons.containsKey(reason)) { 100:    reason = validReasons.get(reason); 101:   } else {