Getting an error in header after migration

Good Day

I created my site on a localhost, I then migrated it to the hosting server and am experience some problems. I am getting this error in the heading field when entereing the customization are of wordpress;

Notice: elementor/post-css-file/parse is deprecated since version 2.0.0! Use elementor/css-file/post/parse instead. in /var/www/sa-diamonds.co.za/www/html/wp-includes/functions.php on line 4711

i cannot find this line in the functions.php, the wordpress header is completely out os shorts and I cannot fix the error. No difference in the plugins or wp i am using from localhost or server, was a complete and staright migration using all in one migration plugin.

Thanks for the assistance if anyone can help.

Kind Regards
Llewellyn van Niekerk

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