No form found under 'null' in locale 'en_US'. A form must be defined in the Commons Validator configuration when dynamicJavascript=&q

As soon as I put <html:javascript /> tag in the jsp, I get this error.
It indicates that it is unable to find a formset.

Solution: Did not add the form name with the tag
ex:

The path of an ForwardConfig cannot be null

Usually, this is an indication that you have validation turned on, the
validation is failing, and the "input" attribute is not set (i.e. it's
NULL)

Source

I was adding validator and forgot to do 'validation="true"' add the 'input' attribute in action mapping