Need expert opinion: I am using Struts 6.6.0. While clicking a back button in my application, I am getting below exception in UIBean.java. I have added all dependencies needed for Struts 6.6.0, as mentioned in release version notes. Can anyone help to understand what could cause this.? The page works when first time load, then from next page if I come back, I am getting below exception:
Caused by: java.lang.NullPointerException: Cannot invoke "java.util.List.add(Object)" because "tags" is null at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:804) ~[struts2-core-6.6.0.jar:6.6.0] *Thanks & Regards* *Santu Dhua*
