Fatal error: Call to undefined function…

[insidersattv]

Hi, some pages in my website are displaying this message, or similar:

Fatal error: Call to undefined function vc_map_get_attributes() in /home/content/p3pnexwpnas03_data01/27/2267827/html/wp-content/themes/kleo/vc_templates/vc_gallery.php on line 27

Check this link with the example: https://www.insiders.com.mx/speakers/luis-fernando-martin/ (a screencap is attached)

I’m using WordPress editor since I’m not familiar with FTP programming, please advice, I have no idea what to do.

Thanks,

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