Fatal error in WordPress

Hi @dzoner

You can always download previous versions of the plugin from this page (use the drop-down list at the very bottom):

https://ww.wp.xz.cn/plugins/forminator/advanced/

As for the error/issue itself:

I just downgraded one of my test sites to 5.8.3 version of WordPress and

– first tested with current Forminator that I already had there
– then completely removed Formiantor and installed it from scratch (newest release)
– and finally, removed it, installed older version and upgraded

and I wasn’t able to trigger any errors in any of these cases. The plugin worked fine with in current and older versions with both current and 5.8.3 WordPress.

The error that you are seeing on your site is just a generic information and, unfortunately, says nothing about what is specifically happening so we’d need to know more about it. The way to find out is to enable debugging and check the logs.

To do so, you’d want to add following lines to the “wp-config.php” file of the site, right above “/* That’s all, stop editing */”:

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_DISPLAY', false );
define( 'WP_DEBUG_LOG', true );

Once they are there, trigger the issue on site again and look for the file “/wp-content/debug.log” on your server. In that file you should see a line (or multiple lines) near the end starting with “Fatal error:”.

Sharing these lines with us should help narrow down possible reasons for the issue so we could then look for ways to solve it.

Kind regards,
Adam