Users activity history

It’s not going to show you previous history before the plugin was activated, there’s no way to do that as you have to have the plugin activated for it to log and store those. This is not something done by default in WordPress.

What you need to do instead is to enable WordPress debugging, and then check the logs.

In your wp-config.php file, enable debug logging, by adding this:

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

This will show the errors on screen, set WP_DEBUG_DISPLAY to false to prevent showing on screen.

With WP_DEBUG_LOG set to true, this will create a file located at wp-content/debug.log which you can view to see any errors or warnings from PHP on your site.