I keep getting this error
[12-Dec-2019 21:43:09 America/Chicago] PHP Fatal error: Uncaught Error: Call to undefined function x_get_view() in /home2/aadmin/public_html/wp-content/themes/pro/404.php:15
Stack trace:
#0 {main}
thrown in /home2/aadmin/public_html/wp-content/themes/pro/404.php on line 15
[14-Dec-2019 22:03:02 America/Chicago] PHP Fatal error: Uncaught Error: Call to undefined function x_get_view() in /home2/aadmin/public_html/wp-content/themes/pro/404.php:15
Stack trace:
#0 {main}
thrown in /home2/aadmin/public_html/wp-content/themes/pro/404.php on line 15
[11-Jan-2020 14:22:21 America/Chicago] PHP Fatal error: Uncaught Error: Call to undefined function x_get_view() in /home2/aadmin/public_html/wp-content/themes/pro/404.php:15
Stack trace:
#0 {main}
thrown in /home2/aadmin/public_html/wp-content/themes/pro/404.php on line 15
[14-Jan-2020 14:17:40 America/Chicago] PHP Fatal error: Uncaught Error: Call to undefined function x_get_view() in /home2/aadmin/public_html/wp-content/themes/pro/404.php:15
Stack trace:
#0 {main}
thrown in /home2/aadmin/public_html/wp-content/themes/pro/404.php on line 15
What is causing this? It is happening on multiple sites. I am not sure what to do here. I thought that it was maybe something to do with the theme files, but all sites are updated on PHP as well as WP and the Themes. Please advise as this is occurring on multiple client websites.
Thanks.