"500 - JHtmlBehavior: :formvalidator not supported" error after registration

[mojtabapordel]

Hi
In my Joomla 2.5.28 site, after filling registration form and click submit button, it redirects to this page:

http://my_site_url/component/users/?view=login

and display this error:

500 - JHtmlBehavior: :formvalidator not supported.

How can I fix it?

My Site Registration Page is:

http://www.shahnoushi.ir/component/user ... gistration

Thank you

[mojtabapordel]

Any solution Please?

[Rondeb]

Try using a different template and see if the problem still exists.

Greatings Ron

[mojtabapordel]

Try using a different template and see if the problem still exists.

Greatings Ron

Thank you
No, just this current template
And this is a new issue
Before, there was not such a problem and error with this template.

[AMurray]

It would be my advice to simply upgrade to Joomla 3.9.13 - the current version. 2.5.x has not been supported for 4 years.

This could be a number of things, including out of date extensions or template, or indeed more to the point out of date Joomla.

Please ensure all your extensions (where available are current)

Please run the FPA report and provide the results as instructed here: https://forumpostassistant.github.io/docs/

[mojtabapordel]

It would be my advice to simply upgrade to Joomla 3.9.13 - the current version. 2.5.x has not been supported for 4 years.

This could be a number of things, including out of date extensions or template, or indeed more to the point out of date Joomla.

Please ensure all your extensions (where available are current)

Please run the FPA report and provide the results as instructed here: https://forumpostassistant.github.io/docs/

Thank you
I'm waiting for Joomla 4 release.

[AMurray]

I wouldn't wait for 4.0 - its stable release schedule is not yet known.

In the mean time you're using an unsupported and vulnerable versions that is susceptible to hacks and all that stuff. I'm guessing you won't have that error you have asked about with Joomla 3.9.13.