Bill

Try deactivating all plugins again, but also temporarily switch to a default WP theme (like Twenty Fifteen). Clear your browser cache before you try to reload the page to test.

I would check out the support forum for whatever theme it is that you’re using. Does it clear up if you switch to the default WP theme (Twenty Fifteen)?

Trate de hacer su pregunta aquí: (Hope Google got it right:)

https://es.forums.wordpress.org/forum/manuales-y-resolucion-de-problemas

It sounds like you tried to edit the theme widget.php file? If that’s the case, you can replace the theme with a fresh copy.

If you can’t access your admin pages, you’ll need to use an FTP client (like FileZilla), or your host’s cpanel (or File Manager) and navigate to the files on the server.

In your WP installation there, find wp-content/themes and rename the twentyeleven theme’s folder to something like twentyeleven-hold, or delete it altogether. That will disable the theme and hopefully allow you to get back into WP admin. WP will use a default WP theme in its place (probably Twentyfifteen).

Once you can get back in to your admin pages, re-install a fresh copy of the theme. If you have made other changes to the theme, you will lose them of course. That’s why you should always make changes to a child theme.

The change you were trying to make at the outset should probably be done in custom style sheet, BTW.

Try adding something like this to your custom styles:

#panel-31-2-0-0 h1 {
	margin: 1em 0 0 !important;
}

It’s giving a 500 server error message, but that can often caused by a plugin. I would disable all plugins and test again. Are you able to login to admin to do that?

You’re welcome. Good luck with it!