Error in taxonomy.php

The function add_term_meta() is being declared twice.

One in the file: /home/xxx/public_html/wp-includes/taxonomy.php

And another in the file: /home/xxx/public_html/wp-content/themes/theleader/framework/inc/taxonomy-metadata.php

A function can only be declared once.

Tip: You can create a separate file for this function, and in the two previous files you can do require_once 'pasta/arquivo_funcao.php';