Fatal error: Uncaught Error: Call to undefined function wp() in /home/azamfvrk/r

Sometimes files are corrupted during transfer when uploaded. Have you tried deleting the plugin and uploading again? As you may know, deleting would require an FTP connection to do which is provided by your host. Once you’ve deleted the plugin, reload your site to confirm it is the plugin causing the issue. If deleting the plugin does not display your site or uploading the plugin again doesn’t help, Revolutions Slider may be able to help.

I delete the plugin from the cpanel
butt error still exist ??

Hi,

Error Related to Missing or Damaged Core Files

Try downloading WordPress again, access your server via SFTP or FTP, or a file manager in your hosting account’s control panel, and delete then replace your copies of everything except the wp-config.php file and the /wp-content/ directory with fresh copies from the download. This will effectively replace all of your core files without damaging your content and settings.

Some uploaders tend to be unreliable when overwriting files, so don’t forget to delete the original files before replacing them.

Thanks,